US7751563B2 - Slice mask and moat pattern partial encryption - Google Patents
Slice mask and moat pattern partial encryption Download PDFInfo
- Publication number
- US7751563B2 US7751563B2 US11/526,316 US52631606A US7751563B2 US 7751563 B2 US7751563 B2 US 7751563B2 US 52631606 A US52631606 A US 52631606A US 7751563 B2 US7751563 B2 US 7751563B2
- Authority
- US
- United States
- Prior art keywords
- encrypted
- encryption
- packets
- horizontal stripes
- packet type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234345—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/23439—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements for generating different versions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
- H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2362—Generation or processing of Service Information [SI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2365—Multiplexing of several video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
- H04N21/23897—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption by partially encrypting, e.g. encrypting only the ending portion of a movie
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
- H04N21/2543—Billing, e.g. for subscription services
- H04N21/25435—Billing, e.g. for subscription services involving characteristics of content or additional data, e.g. video resolution or the amount of advertising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25808—Management of client data
- H04N21/25833—Management of client data involving client hardware characteristics, e.g. manufacturer, processing or storage capabilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25866—Management of end-user data
- H04N21/25875—Management of end-user data involving end-user authentication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2668—Creating a channel for a dedicated end-user group, e.g. insertion of targeted commercials based on end-user profiles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4333—Processing operations in response to a pause request
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4347—Demultiplexing of several video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43607—Interfacing a plurality of external cards, e.g. through a DVB Common Interface [DVB-CI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
- H04N21/43853—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
- H04N21/43856—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption by partial decryption, e.g. decrypting a multiplex stream that has been partially encrypted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440245—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440281—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
- H04N21/44055—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/4508—Management of client data or end-user data
- H04N21/4516—Management of client data or end-user data involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/454—Content or additional data filtering, e.g. blocking advertisements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
- H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/812—Monomedia components thereof involving advertisement data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/782—Television signal recording using magnetic recording on tape
- H04N5/783—Adaptations for reproducing at a rate different from the recording rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/165—Centralised control of user terminal ; Registering at central
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/24—Systems for the transmission of television signals using pulse code modulation
- H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/7921—Processing of colour television signals in connection with recording for more than one processing mode
- H04N9/7925—Processing of colour television signals in connection with recording for more than one processing mode for more than one standard
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/60—Digital content management, e.g. content distribution
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
- H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
Definitions
- This invention relates generally to the field of encryption. More particularly, this invention relates to a encryption method and apparatus particularly useful for scrambling packetized video content such as that provided by cable and satellite television systems.
- FIG. 1 is a block diagram of an exemplary cable system head end consistent with certain embodiments of the present invention.
- FIG. 2 is an illustration of sample transport stream PSI consistent with certain embodiments of the present invention.
- FIG. 3 is a further illustration of sample transport stream PSI consistent with certain embodiments of the present invention.
- FIG. 4 is a block diagram of an illustrative control processor 100 consistent with certain embodiments of the present invention.
- FIG. 5 illustrates the slice structure of a frame of video data consistent with certain embodiments of the present invention.
- FIG. 6 illustrates a video frame with encryption of odd numbered slices consistent with certain embodiments of the present invention.
- FIG. 7 illustrates a video frame with encryption of even numbered slices consistent with certain embodiments of the present invention.
- FIG. 8 illustrates a sequence of slice masks used to produce alternating odd and even numbered encrypted slices in a manner consistent with certain embodiments of the present invention.
- FIG. 9 illustrates a sequence of slice masks used to produce random encryption of frame slices in a manner consistent with certain embodiments of the present invention.
- FIG. 10 illustrates a pattern of horizontal moats and vertical motes forming a checkerboard pattern representing encrypted portions of video.
- FIG. 11 illustrates a television Set-top box that decrypts and decodes in a manner consistent with certain embodiments of the present invention.
- FIG. 12 is a flow chart broadly illustrating an encryption process consistent with embodiments of the present invention.
- the term “scramble” and “encrypt” and variations thereof are used synonymously herein.
- the term “television program” and similar terms can be interpreted in the normal conversational sense, as well as a meaning wherein the term means any segment of A/V content that can be displayed on a television set or similar monitor device.
- video is often used herein to embrace not only true visual information, but also in the conversational sense (e.g., “video tape recorder”) to embrace not only video signals but associated audio and data.
- the term “legacy” as used herein refers to existing technology used for existing cable and satellite systems.
- the exemplary embodiments disclosed herein are decoded by a television Set-Top Box (STB), but it is contemplated that such technology will soon be incorporated within television receivers of all types whether housed in a separate enclosure alone or in conjunction with recording and/or playback equipment or Conditional Access (CA) decryption module or within a television set itself.
- STB television Set-Top Box
- CA Conditional Access
- the present document generally uses the example of a “dual partial encryption” embodiment, but those skilled in the art will recognize that the present invention can be utilized to realize multiple partial encryption without departing from the invention. Partial encryption and selective encryption are used synonymously herein.
- FIG. 1 a head end 100 of a cable television system suitable for use in practicing a dual encryption embodiment of the present invention is illustrated.
- the illustrated head end 100 implements the dual partial encryption scenario of the present invention by adapting the operation of a conventional encryption encoder 104 (such as those provided by Motorola, Inc. and Scientific-Atlanta, Inc., and referred to herein as the primary encryption encoder) with additional equipment.
- a conventional encryption encoder 104 such as those provided by Motorola, Inc. and Scientific-Atlanta, Inc., and referred to herein as the primary encryption encoder
- Head end 100 receives scrambled content from one or more suppliers, for example, using a satellite dish antenna 108 that feeds a satellite receiver 110 .
- Satellite receiver 110 operates to demodulate and descramble the incoming content and supplies the content as a stream of clear (unencrypted) data to a selective encryption encoder 114 .
- the selective encryption encoder 114 uses two passes or two stages of operation, to encode the stream of data.
- Encoder 114 utilizes a secondary conditional access system (and thus a second encryption method) in conjunction with the primary encryption encoder 104 which operates using a primary conditional access system (and thus a primary encryption method).
- a user selection provided via a user interface on a control computer 118 configures the selective encryption encoder 114 to operate in conjunction with either a Motorola or Scientific Atlanta cable network (or other cable or satellite network).
- the data from satellite receiver 110 is supplied as MPEG (Moving Pictures Expert Group) compliant packetized data.
- MPEG Motion Pictures Expert Group
- the data is passed through a Special Packet Identifier 122 .
- Special Packet Identifier 122 identifies specific programming that is to be dual partially encrypted according to the present invention.
- the Special Packet Identifier 122 signals the Special Packet Duplicator 126 to duplicate special packets.
- the Packet Identifier (PID) Remapper 130 under control of the computer 118 , remaps the PIDs of the elementary streams (ES) (i.e., audio, video, etc.) of the programming that shall remain clear and the duplicated packets to new PID values.
- ES elementary streams
- the payload of the elementary stream packets are not altered in any way by Special Packet Identifier 122 , Special Packet Duplicator 126 , or PID remapper 130 . This is done so that the primary encryption encoder 104 will not recognize the clear unencrypted content as content that is to be encrypted.
- the packets may be selected by the special packet identifier 122 according to one of the selection criteria described in the above-referenced applications or may use another selection criteria such as those which will be described later herein.
- packet duplicator 126 creates two copies of the packet. The first copy is identified with the original PID so that the primary encryption encoder 104 will recognize that it is to be encrypted. The second copy is identified with a new and unused PID, called a “secondary PID” (or shadow PID) by the PID Remapper 130 . This secondary PID will be used later by the selective encryption encoder 114 to determine which packets are to be encrypted according to the secondary encryption method.
- FIG. 2 illustrates an exemplary set of transport PSI tables 136 after this remapping with a PAT 138 defining two programs ( 10 and 20 ) with respective PID values 0100 and 0200.
- the two primary commercial providers of cable head end encryption and modulation equipment are (at this writing) Motorola, Inc. and Scientific-Atlanta, Inc. While similar in operation, there are significant differences that should be discussed before proceeding since the present selective encryption encoder 114 is desirably compatible with either system.
- the Integrated Receiver Transcoder IRT
- an unmodulated output is available and therefore there is no need to demodulate the output before returning a signal to the selective encryption encoder 114 , whereas no such unmodulated output is available in a Scientific-Atlanta device.
- the QAM the primary encryption encoder carries out a PID remapping function on received packets.
- provisions are made in the selective encryption encoder 114 to address this remapping.
- PSI Program Specific Information
- PAT Program Association Table
- PMT Program Map Table
- Each added PMT entry contains the new, additional streams (remapped & shadow PIDs) created as part of the selective encryption (SE) encoding process for a corresponding stream in a PMT of the incoming transport.
- SE selective encryption
- These new PMT entries will mirror their corresponding original PMTs.
- the program numbers will be automatically assigned by the selective encryption encoder 114 based upon open, available program numbers as observed from the program number usage in the incoming stream.
- the selective encryption System 114 system displays the inserted program information (program numbers, etc) on the configuration user interface of control computer 118 so that the Multiple System Operator (MSO, e.g., the cable system operator) can add these extra programs into the System Information (SI) control system and instruct the system to carry these programs in the clear.
- MSO Multiple System Operator
- SI System Information
- the modified transport PSI is illustrated as 144 in FIG. 3 with two additional temporary PMTs 146 and 148 appended to the tables of transport PSI 136 .
- the appended PMTs 146 and 148 are temporary. They are used for the primary encryption process and are removed in the second pass of processing by the secondary encryption encoder.
- all entries in the temporary PMTs are marked with stream type “user private” with an identifier of 0xF0.
- These PMTs describe the remapping of the PIDs for use in later recovery of the original mapping of the PIDs in the case of a PID remapping in the Scientific-Atlanta equipment.
- other identifiers could be used without departing from the present invention.
- the selective encryption encoder 114 adds a user private data descriptor to each elementary stream found in the original PMTs in the incoming data transport stream (TS) per the format below (of course, other formats may also be suitable):
- the selective encryption encoder 114 of the current embodiment also adds a user private data descriptor to each elementary stream placed in the temporary PMTs created as described above per the format below:
- the “????” in the tables above is the value of the “orig_pid” which is a variable while the “??” is a “stream_type” value.
- the data field for “orig_pid” is a variable that contains the original incoming PID or in the case of remap or shadow PIDs, the original PID that this stream was associated with.
- the data field “stream_type” is a variable that describes the purpose of the stream based upon the chart below:
- the original PAT and PMTs can remain unmodified, providing the system does not remap PIDs within the primary encryption encoder.
- the asterisks in FIG. 1 indicate functional blocks that are not used in a Motorola cable system.
- the data stream from selective encryption encoder 114 is passed along to the input of the primary encryption encoder 104 which first carries out a PID filtering process at 150 to identify packets that are to be encrypted.
- a PID remapping may be carried out.
- the data are then passed along to an encrypter 154 that, based upon the PID of the packets encrypts certain packets (in accord with the present invention, these packets are the special packets which are mapped by the PID Remapper 130 to the original PID of the incoming data stream for the current program). The remaining packets are unencrypted.
- the data then passes through a PSI modifier 156 that modifies the PSI data to reflect changes made at the PID remapper.
- the data stream is then modulated by a quadrature amplitude modulation (QAM) modulator 158 (in the case of the Scientific-Atlanta device) and passed to the output thereof.
- QAM quadrature amplitude modulation
- This modulated signal is then demodulated by a QAM demodulator 160 .
- the output of the demodulator 160 is directed back to the selective encryption encoder 114 to a PSI parser 164 .
- the second phase of processing of the transport stream for selective encryption is to recover the stream after the legacy encryption process is carried out in the primary encryption encoder 104 .
- the incoming Program Specific Information (PSI) is parsed at 164 to determine the PIDs of the individual elementary streams and their function for each program, based upon the descriptors attached in the first phase of processing. This allows for the possibility of PID remapping, as seen in Scientific-Atlanta primary encryption encoders.
- the elementary streams described in the original program PMTs are located at PSI parser 164 where these streams have been reduced to just the selected packets of interest and encrypted in the legacy CA system format in accord with the primary encryption method at encoder 104 .
- the elementary streams in the temporary programs appended to the original PSI are also recovered at elementary stream concatenator 168 .
- the packets in the legacy streams are appended to the remapped content, which is again remapped back to the PID of the legacy streams, completing the partial, selective encryption of the original elementary streams.
- the temporary PMTs and the associated PAT entries are discarded and removed from the PSI.
- the user private data descriptors added in the first phase of processing are also removed from the remaining original program PMTs in the PSI. For a Motorola system, no PMT or PAT reprocessing is required and only the final secondary encryption of the transport stream occurs.
- the SE encoder 114 creates a shadow PSI structure that parallels the original MPEG PSI, for example, having a PAT origin at PID 0x0000.
- the shadow PAT will be located at a PID specified in the SE encoder configuration as indicated by the MSO from the user interface.
- the shadow PMT PIDs will be automatically assigned by the SE encoder 114 dynamically, based upon open, available PID locations as observed from PID usage of the incoming stream.
- the PMTs are duplicates of the original PMTs, but also Conditional Access (CA) descriptors added to the entire PMT or to the elementary streams referenced within to indicate the standard CA parameters and optionally, shadow PID and the intended operation upon the associated elementary stream.
- CA Conditional Access
- the CA descriptor can appear in the descriptor 1 ( ) or descriptor 2 ( ) loops of the shadow PMT. If found in descriptor 1 ( ), the CA_PID called out in the CA descriptor contains the non-legacy ECM PID which would apply to an entire program. Alternatively, the ECM PID may be sent in descriptor 2 ( ). The CA descriptor should not reference the selective encryption elementary PID in the descriptor 1 ( ) area.
- This shadow PSI insertion occurs regardless of whether the selective encryption operation is for a Motorola or Scientific Atlanta cable network.
- the elementary streams containing the duplicated packets of interest that were also assigned to the temporary PMTs are encrypted during this second phase of operation at secondary packet encrypter 172 in the secondary CA format based upon the configuration data of the CA system attached using the DVB (Digital Video Broadcasting) SimulcryptTM standard.
- the data stream including the clear data, primary encrypted data, secondary encrypted data and other information are then passed to a PSI modifier 176 that modifies the transport PSI information by deletion of the temporary PMT tables and incorporation of remapping as described above.
- the output of the PSI modifier 176 is modulated at a QAM modulator 180 and delivered to the cable plant 184 for distribution to the cable system's customers.
- the control processor 100 may be a personal computer based device that is used to control the selective encryption encoder as described herein.
- An exemplary personal computer based controller 100 is depicted in FIG. 4 .
- Control processor 100 has a central processor unit (CPU) 210 with an associated bus 214 used to connect the central processor unit 210 to Random Access Memory 218 and Non-Volatile Memory 222 in a known manner.
- An output mechanism at 226 such as a display and possibly printer, is provided in order to display and/or print output for the computer user as well as to provide a user interface such as a Graphical User Interface (GUI).
- GUI Graphical User Interface
- input devices such as keyboard and mouse 230 may be provided for the input of information by the user at the MSO.
- Computer 100 also may have disc storage 234 for storing large amounts of information including, but not limited to, program files and data files.
- Computer system 100 also has an interface 238 for connection to the selective encryption encoder 114 .
- Disc storage 234 can store any number of encryption methods that can be downloaded as desired by the Multi-Service Operator (MSO) to vary the encryption on a regular basis to thwart hackers. Moreover, the encryption methods can be varied according to other criteria such as availability of bandwidth and required level of security.
- MSO Multi-Service Operator
- the partial encryption process described above utilizes any suitable conditional access encryption method at encrypters 154 and 172 .
- these encryption techniques are selectively applied to the data stream using a technique such as those described below or in the above-referenced patent applications.
- the selective encryption process utilizes intelligent selection of information to encrypt so that the entire program does not have to undergo dual encryption.
- the program material can be effectively scrambled and hidden from those who desire to hack into the system and illegally recover commercial content without paying.
- the MPEG (or similar format) data that are used to represent the audio and video data does so using a high degree of reliance on the redundancy of information from frame to frame.
- Certain data can be transmitted as “anchor” data representing chrominance and luminance data. That data is then often simply moved about the screen to generate subsequent frames by sending motion vectors that describe the movement of the block. Changes in the chrominance and luminance data are also encoded as changes rather than a recoding of absolute anchor data.
- a method of dual encrypting a digital video signal involves examining unencrypted packets of data in the digital video signal to identify at least one specified packet type, the specified packet type comprising packets of data as will be described hereinafter; encrypting packets identified as being of the specified packet type using a first encryption method to produce first encrypted packets; encrypting the packets identified as being of the specified packet type using a second encryption method to produce second encrypted packets; and replacing the unencrypted packets of the specified packet type with the first encrypted packets and the second encrypted packets in the digital video signal to produce a partially dual encrypted video signal.
- the MPEG specification defines a slice as “ . . . a series of an arbitrary number of consecutive macroblocks.
- the first and last macroblocks of a slice shall not be skipped macroblocks. Every slice shall contain at least one macroblock.
- Slices shall not overlap. The position of slices may change from picture to picture.
- the first and last macroblock of a slice shall be in the same horizontal row of macroblocks. Slices shall occur in the bitstream in the order in which they are encountered, starting at the upper-left of the picture and proceeding by raster-scan order from left to right and top to bottom . . . .”
- the frame is divided into 30 slices (but in general j slices may make up a full frame).
- Each slice contains 33 variable length macroblocks (but in general can include k variable length macroblocks) of information representing a 16 ⁇ 16 pixel region of the image.
- This is illustrated as standard definition frame 250 of FIG. 5 with each slice starting with a slice header (SH 1 -SH 30 ) and each slice having 33 macroblocks (MB 1 -MB 33 ).
- SH 1 -SH 30 slice header
- MB 1 -MB 33 macroblocks
- the image can be scrambled beyond recognition in a number of ways as will be described below.
- the selection criteria for selective encryption hackers can be thwarted on a continuing basis.
- the selection criteria can be changed to adapt to bandwidth requirements as well as need for security of particular content (or other criteria).
- slice mask encryption a different set of slice headers are encrypted from frame to frame.
- the content for that slice is “frozen” on the screen, while content on adjoining slices is updated. This has the effect of breaking up the image on the screen.
- certain slices can be encrypted more often than others to thus deny the decoder the ability to update the content in those slices.
- FIG. 6 and FIG. 7 One embodiment of slice mask encryption is illustrated in FIG. 6 and FIG. 7 .
- a frame of video 270 is illustrated as 30 slices with each slice having a slice header and 33 macroblocks with alternating odd numbered slices being encrypted.
- the entire slice can be encrypted while in others, only key information in the slice is encrypted (e.g., the slice header, or slice header and first macroblock, or slice header and all intra-coded macroblocks in the slice).
- Frame 280 of FIG. 7 by contrast, has all even numbered slices encrypted .
- the entire slice can be encrypted while in others, only key information in the slice is encrypted (e.g., the slice header, or slice header and first macroblock, or slice header and all intra-coded macroblocks in the slice).
- odd slice encryption as in frame 270 can be alternated with even slice encryption as in frame 280 .
- alternating video frames can be encrypted with odd or even slice encryption, with alternating video frames meaning every other frame or every other I, P or B frame.
- the slice that is to be encrypted can be coded or represented using a slice mask as shown in FIG. 8 .
- the slice masks of FIG. 8 are simply binary one dimensional arrays that contain a 1 to indicate that a slice is to be encrypted and a 0 to indicate that the slice is to be unencrypted (or similar code designation).
- slice masks 282 , 284 and 286 represent odd slice encryption while slice masks 292 and 294 represent even slice encryption.
- Such arrays can be stored or generated, in one embodiment, for use in determining which slice is to be encrypted.
- These masks may be applied to any of the following: only I frames, both I frames and P frames, or only P frames.
- different masks may be used for I frames than P frames.
- fifteen packets/frame can be encrypted to encrypt the slice headers of the slices corresponding to 1 in the slice mask. This results in a low percentage of the actual data in a video frame actually being encrypted.
- the encryption of a slice can depend on any of the following:
- Encrypting I frame slices eliminates anchor chrominance/luminance data used by the other types of frames.
- Encrypting P frame slices eliminates both anchor chrominance/luminance as well as motion vector data.
- Anchor chrominance/luminance can come in the form of scene changes, and if the content is Motorola encoded, then “progressive” I slices.
- the effect of Frame Mask encryption can be very effective. Experiments have shown that for a Motorola encoded program, encrypting only 3% of the packets can make it difficult to identify any objects in an image.
- slice masks can be varied according to any suitable algorithm.
- FIG. 9 illustrates random variation in the slice masks from frame to frame.
- Each of the slice masks 302 , 304 , 306 , 308 and 310 is randomly (or equivalently, pseudo-randomly) generated so that a random array of slices is encrypted (e.g., by encryption of the payload of a packet containing the slice header) at each frame.
- selected portions of the frame can be deemed the “active region” of the image.
- This region is somewhat difficult to define and is somewhat content dependent. But, generally speaking it is approximately a central area of the frame. More commonly, it is approximately an upper central portion of the frame of approximately half (say, one third to 3 ⁇ 4) of the overall area of the frame centered at approximately the center of the frame horizontally and approximately the tenth to fifteenth slice.
- random or pseudo-random slices are encrypted (e.g., by encryption of packets containing the slice header) with a weighting function applied to cause the active region of the image to be encrypted with greater frequency than other portions of the image.
- the center of the image is the active region.
- a linear or a bell shaped weighting function can be applied to the random selection of slices to encrypt so that slices near the center are more frequently encrypted than those at the top or bottom of the image.
- slices 8 - 22 of a 30 slice frame are deemed to bound the active region.
- Slices can then be randomly selected in each frame for encryption with a multiplication factor used to increase the likelihood that slices 8 - 22 will be encrypted.
- those slices can be made twice or three times as likely to be encrypted as other slices.
- slices 1 - 7 and 23 - 30 can be made less likely to be encrypted. Any suitable pattern of macroblocks within a slice can be encrypted in order to encrypt the slice. Other variations will occur to those skilled in the art upon consideration of the present teachings.
- the above slice mask encryption technique can be viewed as creating horizontal “moats” of encrypted information in the video frame, with each moat corresponding to a single slice in width.
- the moat width can be varied by encrypting multiple adjacent slices.
- vertical “moats” can be generated by selecting macroblocks of data to be encrypted in a particular frame of data. This is depicted in FIG. 10 by an array of binary data 320 that represents encryption of slices 1 - 5 , 11 - 15 and 21 - 25 to create three horizontal moats 322 , 324 and 326 respectively (each being 5 slices in width) in a video frame. This array may be referred to as a horizontal moat mask or slice mask.
- an array of binary data 330 represents a vertical moat mask for encryption of macroblocks numbered 1 - 3 , 7 - 9 , 13 - 15 , 19 - 21 , 24 - 27 and 31 - 33 to create six vertical moats 332 , 334 , 336 , 338 , 340 and 342 respectively (each being three macroblocks in width).
- other patterns of horizontal and/or vertical moats can also be generated, for example, with greater or lesser density, greater or lesser moat width, greater emphasis on an active portion of the image or randomly generated moats, without departing from the present invention.
- intra-coded macroblocks in the vertical and horizontal stripe through the image are encrypted.
- intra-coded macroblocks By encrypting the intra-coded macroblocks, inter-coded macroblocks are left without reference data and become meaningless, thus effectively scrambling the video image.
- the horizontal stripes can be encrypted by any suitable technique including, but not limited to, encryption of the slice header, encryption of the slice header plus the first macroblock, encryption of all macroblocks in the slice or any other suitable technique.
- the vertical stripes can be encrypted by encryption of intra-coded macroblocks or all macroblocks in the stripe without departing from the invention.
- the vertical moats prevent the direct calculation of all the macroblocks on a slice with one good known value anywhere on the slice. Although a known value may be obtained by correlation of macroblocks from previous frames of the same slice or clear intracoded macroblocks from another part of the slice, this is generally inadequate to provide an effective hack to the encryption method.
- the checkerboard pattern of encryption the correlated macroblock would only “fix” the macroblocks in the particular checkerboard square in which that macroblock is located . . . not the entire slice.
- the vertical moat creates a discontinuity which increases distortion in the image.
- This encryption technique prevents intracoded macroblocks from slices below or above the encrypted slice from being used to correct information in macroblocks above or below.
- the horizontal stripe or moat creates a discontinuity that disrupts a hacker's ability to obtain enough reference data to effectively decrypt the image.
- This checker board pattern produces a bandwidth savings in a dual or multiple encryption scenario which is substantially reduced compared with 100% encryption of the slice.
- encryption techniques are possible to produce encryption that has varying bandwidth requirements, varying levels of security and varying complexity.
- Such encryption techniques can be selected by control computer 118 in accordance with the needs of the MSO.
- the above-described encryption techniques can provide several additional choices to enrich a pallette of encryption techniques that can thus be selected by control computer 118 to vary the encryption making hacking more difficult.
- a selection of packets to encrypt can be made by the control computer 118 in order to balance encryption security with bandwidth and in order to shift the encryption technique from time to time to thwart hackers.
- An authorized set-top box such as 300 illustrated in FIG. 11 operating under the secondary CA system decrypts and decodes the incoming program by recognizing both primary and secondary PIDs associated with a single program.
- the multiplexed video data stream containing both PIDs is directed to a demultiplexer 304 .
- the demultiplexer directs encrypted packets containing encrypted content and secondary PIDS to a secondary CA decrypter 308 . These packets are then decrypted at 308 and passed to a PID remapper 312 .
- the PID remapper 312 receives packets that are unencrypted and bear the primary PID as well as the decrypted packets having the secondary PID.
- the PID remapper 312 combines the decrypted packets from decrypter 308 with the unencrypted packets having the primary PID to produce an unencrypted data stream representing the desired program.
- PID remapping is used to change either the primary or secondary PID or both to a single PID.
- This unencrypted data stream can then be decoded normally by decoder 316 .
- FIG. 12 is a flow chart 400 that broadly illustrates the encryption process consistent with certain embodiments of the present invention starting at 404 .
- the packet type that is to be encrypted is specified.
- the selected packet type may be packets containing data representing vertical and/or horizontal stripes in a video frame.
- Packets are then examined at 412 to identify packets of the specified type.
- the identified packets are duplicated and at 420 one set of these packets is encrypted under a first encryption method.
- the other set of identified packets is encrypted at 424 under a second encryption method.
- the originally identified packets are then replaced in the data stream with the two sets of encrypted packets at 430 and the process ends at 436 .
- processors 118 processors implementing any or all of the elements of 114 or implementing any or all of the elements of 300 .
- the invention should not be so limited, since the present invention could be implemented using hardware component equivalents such as special purpose hardware and/or dedicated processors which are equivalents to the invention as described and claimed.
- general purpose computers, microprocessor based computers, micro-controllers, optical computers, analog computers, dedicated processors and/or dedicated hard wired logic may be used to construct alternative equivalent embodiments of the present invention.
- the present invention is implemented using a programmed processor executing programming instructions that are broadly described above form that can be stored on any suitable electronic storage medium or transmitted over any suitable electronic communication medium or otherwise be present in any computer readable or propagation medium.
- programming instructions that are broadly described above form that can be stored on any suitable electronic storage medium or transmitted over any suitable electronic communication medium or otherwise be present in any computer readable or propagation medium.
- the processes described above can be implemented in any number of variations and in many suitable programming languages without departing from the present invention. For example, the order of certain operations carried out can often be varied, additional operations can be added or operations can be deleted without departing from the invention. Error trapping can be added and/or enhanced and variations can be made in user interface and information presentation without departing from the present invention. Such variations are contemplated and considered equivalent.
- Software code and/or data embodying certain aspects of the present invention may be present in any computer readable medium, transmission medium, storage medium or propagation medium including, but not limited to, electronic storage devices such as those described above, as well as carrier waves, electronic signals, data structures (e.g., trees, linked lists, tables, packets, frames, etc.) optical signals, propagated signals, broadcast signals, transmission media (e.g., circuit connection, cable, twisted pair, fiber optic cables, waveguides, antennas, etc.) and other media that stores, carries or passes the code and/or data. Such media may either store the software code and/or data or serve to transport the code and/or data from one location to another.
- MPEG compliant packets, slices, tables and other data structures are used, but this should not be considered limiting since other data structures can similarly be used without departing from the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Graphics (AREA)
- Business, Economics & Management (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Marketing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Signal Processing For Recording (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
Syntax | value | # of bits | ||
private_data_indicator_descriptor( ) { | ||||
descriptor_tag | 0xF0 | 8 | ||
descriptor_length | 0x04 | 8 | ||
private_data_indicator( ) { | ||||
orig_pid | 0x???? | 16 | ||
stream_type | 0x?? | 8 | ||
reserved | 0xFF | 8 | ||
} | ||||
} | ||||
Syntax | value | # of bits | ||
private_data_indicator_descriptor( ) { | ||||
descriptor_tag | 0xF0 | 8 | ||
descriptor_length | 0x04 | 8 | ||
private_data_indicator( ) { | ||||
orig_pid | 0x???? | 16 | ||
stream_type | 0x?? | 8 | ||
reserved | 0xFF | 8 | ||
} | ||||
} | ||||
Stream Type | Value | ||
Legacy ES | 0x00 | ||
Remapped ES | 0x01 | ||
Shadow ES | 0x02 | ||
Reserved | 0x03-0xFF | ||
CA PID Definition | Secondary CA private data Value | ||
ECM PID | 0x00 | ||
Replacement PID | 0x01 | ||
Insertion PID | 0x02 | ||
ECM PID | undefined (default) | ||
-
- The location of the slice in the frame (with higher density towards the “active” part of the screen)
- Whether found in an I, P or B frame (higher to lower priority)
- # of patterns or masks used before they are repeated
Claims (46)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/526,316 US7751563B2 (en) | 2002-01-02 | 2006-09-25 | Slice mask and moat pattern partial encryption |
US12/661,400 US8103000B2 (en) | 2002-01-02 | 2010-03-16 | Slice mask and moat pattern partial encryption |
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/038,032 US7139398B2 (en) | 2001-06-06 | 2002-01-02 | Time division partial encryption |
US10/038,217 US7336787B2 (en) | 2001-06-06 | 2002-01-02 | Critical packet partial encryption |
US10/037,914 US7124303B2 (en) | 2001-06-06 | 2002-01-02 | Elementary stream partial encryption |
US10/037,498 US7127619B2 (en) | 2001-06-06 | 2002-01-02 | Decoding and decryption of partially encrypted information |
US10/037,499 US7151831B2 (en) | 2001-06-06 | 2002-01-02 | Partial encryption and PID mapping |
US37285502P | 2002-04-16 | 2002-04-16 | |
US40967502P | 2002-09-09 | 2002-09-09 | |
US10/274,084 US7155012B2 (en) | 2002-01-02 | 2002-10-18 | Slice mask and moat pattern partial encryption |
US11/526,316 US7751563B2 (en) | 2002-01-02 | 2006-09-25 | Slice mask and moat pattern partial encryption |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/274,084 Continuation US7155012B2 (en) | 2002-01-02 | 2002-10-18 | Slice mask and moat pattern partial encryption |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/661,400 Continuation US8103000B2 (en) | 2002-01-02 | 2010-03-16 | Slice mask and moat pattern partial encryption |
Publications (2)
Publication Number | Publication Date |
---|---|
US20070098166A1 US20070098166A1 (en) | 2007-05-03 |
US7751563B2 true US7751563B2 (en) | 2010-07-06 |
Family
ID=27574246
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/274,084 Expired - Lifetime US7155012B2 (en) | 2002-01-02 | 2002-10-18 | Slice mask and moat pattern partial encryption |
US11/526,316 Expired - Fee Related US7751563B2 (en) | 2002-01-02 | 2006-09-25 | Slice mask and moat pattern partial encryption |
US12/661,400 Expired - Fee Related US8103000B2 (en) | 2002-01-02 | 2010-03-16 | Slice mask and moat pattern partial encryption |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/274,084 Expired - Lifetime US7155012B2 (en) | 2002-01-02 | 2002-10-18 | Slice mask and moat pattern partial encryption |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/661,400 Expired - Fee Related US8103000B2 (en) | 2002-01-02 | 2010-03-16 | Slice mask and moat pattern partial encryption |
Country Status (2)
Country | Link |
---|---|
US (3) | US7155012B2 (en) |
CA (4) | CA2413955C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100189254A1 (en) * | 2002-01-02 | 2010-07-29 | Candelore Brant L | Slice mask and moat pattern partial encryption |
US20190342071A1 (en) * | 2018-05-07 | 2019-11-07 | Qualcomm Incorporated | Method and apparatus for decrypting data blocks of a pattern-encrypted subsample |
Families Citing this family (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5619501A (en) * | 1994-04-22 | 1997-04-08 | Thomson Consumer Electronics, Inc. | Conditional access filter as for a packet video signal inverse transport system |
US6020189A (en) * | 1996-08-30 | 2000-02-01 | The Johns Hopkins University School Of Medicine | Fibroblast growth factor homologous factors (FHFs) and methods of use |
US6697489B1 (en) | 1999-03-30 | 2004-02-24 | Sony Corporation | Method and apparatus for securing control words |
US7730300B2 (en) | 1999-03-30 | 2010-06-01 | Sony Corporation | Method and apparatus for protecting the transfer of data |
US7039614B1 (en) | 1999-11-09 | 2006-05-02 | Sony Corporation | Method for simulcrypting scrambled data to a plurality of conditional access devices |
US8127326B2 (en) | 2000-11-14 | 2012-02-28 | Claussen Paul J | Proximity detection using wireless connectivity in a communications system |
WO2002047388A2 (en) | 2000-11-14 | 2002-06-13 | Scientific-Atlanta, Inc. | Networked subscriber television distribution |
US7895616B2 (en) | 2001-06-06 | 2011-02-22 | Sony Corporation | Reconstitution of program streams split across multiple packet identifiers |
US7747853B2 (en) | 2001-06-06 | 2010-06-29 | Sony Corporation | IP delivery of secure digital content |
US7127619B2 (en) | 2001-06-06 | 2006-10-24 | Sony Corporation | Decoding and decryption of partially encrypted information |
JP2003143015A (en) * | 2001-11-07 | 2003-05-16 | Sony Corp | Signal processing method and apparatus as well as code string generating method and apparatus |
US7292690B2 (en) | 2002-01-02 | 2007-11-06 | Sony Corporation | Video scene change detection |
US7302059B2 (en) | 2002-01-02 | 2007-11-27 | Sony Corporation | Star pattern partial encryption |
US7823174B2 (en) | 2002-01-02 | 2010-10-26 | Sony Corporation | Macro-block based content replacement by PID mapping |
US7765567B2 (en) | 2002-01-02 | 2010-07-27 | Sony Corporation | Content replacement by PID mapping |
US7215770B2 (en) | 2002-01-02 | 2007-05-08 | Sony Corporation | System and method for partially encrypted multimedia stream |
US7516470B2 (en) | 2002-08-02 | 2009-04-07 | Cisco Technology, Inc. | Locally-updated interactive program guide |
US8818896B2 (en) | 2002-09-09 | 2014-08-26 | Sony Corporation | Selective encryption with coverage encryption |
US7908625B2 (en) | 2002-10-02 | 2011-03-15 | Robertson Neil C | Networked multimedia system |
US7360235B2 (en) | 2002-10-04 | 2008-04-15 | Scientific-Atlanta, Inc. | Systems and methods for operating a peripheral record/playback device in a networked multimedia system |
US7545935B2 (en) * | 2002-10-04 | 2009-06-09 | Scientific-Atlanta, Inc. | Networked multimedia overlay system |
US8046806B2 (en) | 2002-10-04 | 2011-10-25 | Wall William E | Multiroom point of deployment module |
US7724907B2 (en) | 2002-11-05 | 2010-05-25 | Sony Corporation | Mechanism for protecting the transfer of digital content |
US8572408B2 (en) | 2002-11-05 | 2013-10-29 | Sony Corporation | Digital rights management of a digital device |
US8667525B2 (en) | 2002-12-13 | 2014-03-04 | Sony Corporation | Targeted advertisement selection from a digital stream |
US8645988B2 (en) | 2002-12-13 | 2014-02-04 | Sony Corporation | Content personalization for digital content |
US7487532B2 (en) | 2003-01-15 | 2009-02-03 | Cisco Technology, Inc. | Optimization of a full duplex wideband communications system |
US8094640B2 (en) | 2003-01-15 | 2012-01-10 | Robertson Neil C | Full duplex wideband communications system for a local coaxial network |
JP2005020346A (en) * | 2003-06-26 | 2005-01-20 | Konica Minolta Business Technologies Inc | Data encrypting device, data decrypting device, image data storage device, and image forming device |
US7853980B2 (en) | 2003-10-31 | 2010-12-14 | Sony Corporation | Bi-directional indices for trick mode video-on-demand |
KR100630680B1 (en) * | 2004-03-19 | 2006-10-02 | 삼성전자주식회사 | Non-volatile Memory Device with Asymmetrical Gate Dielectric Layer and Manufacturing Method thereof |
US7895617B2 (en) | 2004-12-15 | 2011-02-22 | Sony Corporation | Content substitution editor |
US8041190B2 (en) | 2004-12-15 | 2011-10-18 | Sony Corporation | System and method for the creation, synchronization and delivery of alternate content |
FR2879878B1 (en) * | 2004-12-22 | 2007-05-25 | Thales Sa | COMPATIBLE SELECTIVE ENCRYPTION METHOD FOR VIDEO STREAM |
US7386128B2 (en) * | 2004-12-29 | 2008-06-10 | General Instrument Corporation | Conditional access system providing access to multiple programs or services |
US20060222319A1 (en) * | 2005-04-05 | 2006-10-05 | Scientific-Atlanta, Inc. | Pre-recorded dvd ad insertion |
US7876998B2 (en) | 2005-10-05 | 2011-01-25 | Wall William E | DVD playback over multi-room by copying to HDD |
US20070088770A1 (en) * | 2005-10-14 | 2007-04-19 | Ming-Tsung Chiang | Structure for re-arranging file allocation index by memory block |
US8275132B2 (en) * | 2006-05-15 | 2012-09-25 | Buchen Neil B | System and method for dynamically allocating stream identifiers in a multi-encryption transport system |
US20090031367A1 (en) * | 2007-07-24 | 2009-01-29 | The Directv Group, Inc. | Method and system for utilizing multiple content delivery networks for distributing content |
US9104987B2 (en) * | 2007-07-24 | 2015-08-11 | The Directv Group, Inc. | Method and system for associating business rules with received content in a content processing system and generating a content list therefrom |
US9832424B2 (en) * | 2007-07-25 | 2017-11-28 | The Directv Group, Inc. | Method and system for managing content lifecycle in a content processing system |
US8964734B2 (en) * | 2007-07-26 | 2015-02-24 | The Directv Group, Inc. | Method and system for communicating content having modified packet headers through a satellite |
US8462271B2 (en) * | 2007-07-26 | 2013-06-11 | The Directv Group, Inc. | Method and system of managing files within a content processing system based on publication time |
US9564988B2 (en) * | 2007-07-26 | 2017-02-07 | The Directv Group, Inc. | Method and system for forming a formatted content stream and using a cyclic redundancy check |
WO2009137247A2 (en) * | 2008-04-15 | 2009-11-12 | Guest-Tek Interactive Entertainment Ltd. | System and method for providing end-to-end content security |
US8880879B2 (en) * | 2008-09-04 | 2014-11-04 | Intel Corporation | Accelerated cryptography with an encryption attribute |
CN101562813B (en) | 2009-05-12 | 2012-01-11 | 中兴通讯股份有限公司 | Method for implementing real-time data service, real-time data service system and mobile terminal |
US8630412B2 (en) * | 2010-08-25 | 2014-01-14 | Motorola Mobility Llc | Transport of partially encrypted media |
US9008308B2 (en) * | 2012-02-08 | 2015-04-14 | Vixs Systems, Inc | Container agnostic decryption device and methods for use therewith |
DE102013226802A1 (en) * | 2013-12-20 | 2015-06-25 | Siemens Aktiengesellschaft | Privacy protection in a video stream using a redundant slice |
US10038915B2 (en) * | 2014-05-22 | 2018-07-31 | Qualcomm Incorporated | Escape sample coding in palette-based video coding |
US10841626B2 (en) | 2014-10-27 | 2020-11-17 | Texas Instruments Incorporated | Selective picture-based encryption of video streams |
GB2533279B (en) * | 2014-12-08 | 2019-08-14 | Gurulogic Microsystems Oy | Secure media player |
US9910791B1 (en) * | 2015-06-30 | 2018-03-06 | EMC IP Holding Company LLC | Managing system-wide encryption keys for data storage systems |
KR20170032776A (en) * | 2015-09-15 | 2017-03-23 | 삼성전자주식회사 | Image Processing Device and Image Processing Method Performing Selective Image Encryption |
US11636855B2 (en) | 2019-11-11 | 2023-04-25 | Sonos, Inc. | Media content based on operational data |
US11204737B2 (en) | 2019-11-11 | 2021-12-21 | Sonos, Inc. | Playback queues for shared experiences |
CN110830520B (en) * | 2020-01-13 | 2020-04-17 | 中国人民解放军国防科技大学 | Robust and reliable edge storage method and system for Internet of things |
AU2021259316B2 (en) | 2020-04-21 | 2023-11-23 | Sonos, Inc. | Priority media content |
US20230289473A1 (en) * | 2020-06-17 | 2023-09-14 | The Trustees Of Princeton University | System and method for secure and robust distributed deep learning |
Citations (202)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4374399A (en) | 1981-08-13 | 1983-02-15 | Zenith Radio Corporation | Insertion of non-synchronous data into vertical interval |
US4881263A (en) | 1987-09-25 | 1989-11-14 | Digital Equipment Corporation | Apparatus and method for secure transmission of data over an unsecure transmission channel |
US4914515A (en) | 1986-04-18 | 1990-04-03 | U.S. Philips Corporation | Method of transmitting update information for a stationary video picture |
US4964126A (en) | 1988-09-30 | 1990-10-16 | Massachusetts Institute Of Technology | Fault tolerant signal processing machine and method |
US5151782A (en) | 1989-05-17 | 1992-09-29 | Reiss Media Enterprises | Control system for satellite delivered pay-per-view television system |
US5195135A (en) | 1991-08-12 | 1993-03-16 | Palmer Douglas A | Automatic multivariate censorship of audio-video programming by user-selectable obscuration |
US5319712A (en) * | 1993-08-26 | 1994-06-07 | Motorola, Inc. | Method and apparatus for providing cryptographic protection of a data stream in a communication system |
US5414852A (en) | 1992-10-30 | 1995-05-09 | International Business Machines Corporation | Method for protecting data in a computer system |
US5444782A (en) | 1993-03-09 | 1995-08-22 | Uunet Technologies, Inc. | Computer network encryption/decryption device |
US5477263A (en) | 1994-05-26 | 1995-12-19 | Bell Atlantic Network Services, Inc. | Method and apparatus for video on demand with fast forward, reverse and channel pause |
US5515107A (en) | 1994-03-30 | 1996-05-07 | Sigma Designs, Incorporated | Method of encoding a stream of motion picture data |
US5526427A (en) | 1994-07-22 | 1996-06-11 | A.C. Nielsen Company | Universal broadcast code and multi-level encoded signal monitoring system |
EP0720374A1 (en) | 1994-12-30 | 1996-07-03 | Daewoo Electronics Co., Ltd | Apparatus for parallel decoding of digital video signals |
US5539823A (en) * | 1994-07-27 | 1996-07-23 | General Instrument Corporation Of Delaware | Subscription television picture scrambling and descrambling system providing compatibility with different such systems |
US5553141A (en) | 1982-07-12 | 1996-09-03 | Scientific-Atlanta, Inc. | Encryption and decryption (scrambling and unscrambling) of video signals |
US5594507A (en) | 1990-09-28 | 1997-01-14 | Ictv, Inc. | Compressed digital overlay controller and method for MPEG type video signal |
US5600378A (en) | 1995-05-22 | 1997-02-04 | Scientific-Atlanta, Inc. | Logical and composite channel mapping in an MPEG network |
EP0382764B1 (en) | 1987-09-11 | 1997-04-09 | Personalized Media Communications, L.L.C. | Signal processing apparatus and methods |
US5629866A (en) | 1994-03-18 | 1997-05-13 | U.S. Philips Corporation | Audio-visual presentation system |
US5652615A (en) | 1995-06-30 | 1997-07-29 | Digital Equipment Corporation | Precision broadcast of composite programs including secondary program content such as advertisements |
US5696906A (en) | 1995-03-09 | 1997-12-09 | Continental Cablevision, Inc. | Telecommunicaion user account management system and method |
US5726702A (en) | 1994-02-23 | 1998-03-10 | Hitachi, Ltd. | Television signal receiving apparatus incorporating an information retrieving and reproducing apparatus |
US5754658A (en) * | 1996-04-19 | 1998-05-19 | Intel Corporation | Adaptive encryption to avoid processor oversaturation |
US5761180A (en) | 1996-01-30 | 1998-06-02 | Sony Corporation | Signal processing for selective temporal data recording and reproduction |
US5835668A (en) | 1994-11-14 | 1998-11-10 | Sony Corporation | Transmission, recording and reproduction of digital data and time information in transport packets using a compression ratio |
US5838873A (en) | 1996-05-31 | 1998-11-17 | Thomson Consumer Electronics, Inc. | Packetized data formats for digital data storage media |
US5892900A (en) | 1996-08-30 | 1999-04-06 | Intertrust Technologies Corp. | Systems and methods for secure transaction management and electronic rights protection |
US5905732A (en) | 1996-08-27 | 1999-05-18 | Zenith Electronics Corporation | PCR restamper |
US5917830A (en) | 1996-10-18 | 1999-06-29 | General Instrument Corporation | Splicing compressed packetized digital video streams |
EP0926894A1 (en) | 1997-12-23 | 1999-06-30 | CANAL+ Société Anonyme | Scrambling unit for a digital transmission system |
US5920625A (en) * | 1994-04-08 | 1999-07-06 | Irdeto Bv | Method and apparatus for transmitting and receiving encrypted signals |
US5920626A (en) | 1996-12-20 | 1999-07-06 | Scientific-Atlanta, Inc. | Analog/digital system for television services |
US5943605A (en) | 1997-04-16 | 1999-08-24 | Lucent Technologies Inc. | Arrangement for controlling extraction of data from a broadband digital stream employing a symbol table for translating symbolic program names to program and channel numbers |
EP0696141B1 (en) | 1994-08-01 | 1999-09-22 | NOKIA TECHNOLOGY GmbH | Method for controlling different conditional access systems sending video, audio and data services and a receiver using the method |
US5963909A (en) | 1995-12-06 | 1999-10-05 | Solana Technology Development Corporation | Multi-media copy management system |
US5973726A (en) | 1993-09-24 | 1999-10-26 | Canon Kabushiki Kaisha | Panoramic image processing apparatus |
US6005940A (en) | 1997-05-16 | 1999-12-21 | Software Security, Inc. | System for securely storing and reading encrypted data on a data medium using a transponder |
US6016348A (en) | 1996-11-27 | 2000-01-18 | Thomson Consumer Electronics, Inc. | Decoding system and data format for processing and storing encrypted broadcast, cable or satellite video data |
US6057832A (en) | 1997-12-02 | 2000-05-02 | V Soft Ltd. | Method and apparatus for video-on-demand with fast play capability |
US6061471A (en) | 1996-06-07 | 2000-05-09 | Electronic Data Systems Corporation | Method and system for detecting uniform images in video signal |
US6064676A (en) | 1998-01-14 | 2000-05-16 | Skystream Corporation | Remultipelxer cache architecture and memory organization for storing video program bearing transport packets and descriptors |
US6134237A (en) | 1997-09-30 | 2000-10-17 | Motorola, Inc. | Method and apparatus for tracking data packets in a packet data communication system |
US6170075B1 (en) | 1997-12-18 | 2001-01-02 | 3Com Corporation | Data and real-time media communication over a lossy network |
US6181364B1 (en) | 1997-05-16 | 2001-01-30 | United Video Properties, Inc. | System for filtering content from videos |
US6201927B1 (en) | 1997-02-18 | 2001-03-13 | Mary Lafuze Comer | Trick play reproduction of MPEG encoded signals |
US6219358B1 (en) | 1998-09-11 | 2001-04-17 | Scientific-Atlanta, Inc. | Adaptive rate control for insertion of data into arbitrary bit rate data streams |
US6222924B1 (en) | 1996-01-30 | 2001-04-24 | Oy Nokia Ab | Scrambling of digital media objects in connection with transmission and storage |
US6223290B1 (en) | 1998-05-07 | 2001-04-24 | Intel Corporation | Method and apparatus for preventing the fraudulent use of a cellular telephone |
US6226385B1 (en) | 1997-06-02 | 2001-05-01 | Mitsubishi Denki Kabushiki Kaisha | Encryption communication system capable of reducing network managing workload |
CA2389247A1 (en) | 1999-11-05 | 2001-05-17 | Dentsu Inc. | Television system for accumulation-oriented broadcast information display system, distribution sysem and information distribution method |
US20010013123A1 (en) | 1991-11-25 | 2001-08-09 | Freeman Michael J. | Customized program creation by splicing server based video, audio, or graphical segments |
US20010024471A1 (en) | 2000-03-15 | 2001-09-27 | Philippe Bordes | Process and device for coding video images |
US20010036271A1 (en) | 1999-09-13 | 2001-11-01 | Javed Shoeb M. | System and method for securely distributing digital content for short term use |
US6314409B2 (en) | 1996-01-11 | 2001-11-06 | Veridian Information Solutions | System for controlling access and distribution of digital property |
US6314111B1 (en) | 1996-11-21 | 2001-11-06 | Nokia Technology Gmbh | Method for transmission of address data |
US6323914B1 (en) | 1999-04-20 | 2001-11-27 | Lsi Logic Corporation | Compressed video recording device with integrated effects processing |
US6327421B1 (en) | 1998-03-10 | 2001-12-04 | International Business Machines Corporation | Multiple speed fast forward/rewind compressed video delivery system |
US6337947B1 (en) | 1998-03-24 | 2002-01-08 | Ati Technologies, Inc. | Method and apparatus for customized editing of video and/or audio signals |
US20020003881A1 (en) | 1998-08-20 | 2002-01-10 | Glenn Arthur Reitmeier | Secure information distribution system utilizing information segment scrambling |
US20020021805A1 (en) | 1999-01-06 | 2002-02-21 | Schumann Robert Wilhelm | Digital content distribution system and method |
US20020023013A1 (en) | 2000-04-19 | 2002-02-21 | Hughes David A. | Method and apparatus for presenting content available by digital download and fulfilling digital download purchases |
US6351813B1 (en) | 1996-02-09 | 2002-02-26 | Digital Privacy, Inc. | Access control/crypto system |
US20020026478A1 (en) | 2000-03-14 | 2002-02-28 | Rodgers Edward B. | Method and apparatus for forming linked multi-user groups of shared software applications |
US20020036717A1 (en) | 1999-08-24 | 2002-03-28 | Fujitsu Limited | Image processing device, method and storage medium thereof |
US20020044558A1 (en) | 2000-10-13 | 2002-04-18 | Astrolink International, Llc | Distributed IP over ATM architecture |
US6377589B1 (en) | 1996-11-26 | 2002-04-23 | British Telecommunications Public Limited Company | Communications system |
US20020056093A1 (en) | 2000-02-02 | 2002-05-09 | Kunkel Gerard K. | System and method for transmitting and displaying targeted infromation |
US20020065678A1 (en) | 2000-08-25 | 2002-05-30 | Steven Peliotis | iSelect video |
US20020066101A1 (en) | 2000-11-27 | 2002-05-30 | Gordon Donald F. | Method and apparatus for delivering and displaying information for a multi-layer user interface |
US20020067436A1 (en) | 2000-05-16 | 2002-06-06 | Akira Shirahama | Information-processing device |
US20020083439A1 (en) | 2000-08-31 | 2002-06-27 | Eldering Charles A. | System for rescheduling and inserting advertisements |
US6418169B1 (en) | 1997-10-16 | 2002-07-09 | Thomson Licensing S.A. | System for prioritizing bi-directional broadcast data |
US6424717B1 (en) | 1995-04-03 | 2002-07-23 | Scientific-Atlanta, Inc. | Encryption devices for use in a conditional access system |
US20020100054A1 (en) | 2000-11-27 | 2002-07-25 | Brian Feinberg | Remote monitoring and control method and apparatus for an information distribution system |
US20020109707A1 (en) | 2001-01-17 | 2002-08-15 | Guillermo Lao | Method and apparatus for managing digital content usage rights |
US20020116705A1 (en) | 2001-02-20 | 2002-08-22 | Perlman Stephen G. | System and method for processing conditional access data |
US20020126890A1 (en) | 1996-05-28 | 2002-09-12 | Tatsushi Katayama | Adaptive image combination according to image sensing condition |
US6453116B1 (en) | 1999-02-18 | 2002-09-17 | Kabushiki Kaisha Toshiba | Recording medium of stream data, and recording method and playback method of the same |
US6452923B1 (en) | 1998-12-31 | 2002-09-17 | At&T Corp | Cable connected wan interconnectivity services for corporate telecommuters |
US20020144260A1 (en) | 2001-03-29 | 2002-10-03 | Koninklijke Philips Electronics N.V. | Method for adaptive data/content insertion in MPEG2 transport stream |
US20020144116A1 (en) | 2000-12-27 | 2002-10-03 | Giobbi John J. | Digital rights management |
US20020150239A1 (en) * | 2001-04-17 | 2002-10-17 | Vidius Inc. | Method for personalized encryption in an un-trusted environment |
US20020157115A1 (en) | 2001-04-24 | 2002-10-24 | Koninklijke Philips Electronics N.V. | Wireless communication point of deployment module for use in digital cable compliant devices |
US6473459B1 (en) | 1998-03-05 | 2002-10-29 | Kdd Corporation | Scene change detector |
US20020164022A1 (en) | 2001-03-02 | 2002-11-07 | Strasser David A. | Method and apparatus for providing bus-encrypted copy protection key to an unsecured bus |
US6480551B1 (en) | 1997-11-18 | 2002-11-12 | Sony Corporation | Signal processing device and method for switching signal processors thereof |
US6490728B1 (en) | 1998-07-16 | 2002-12-03 | Sony Corporation | Channel information transmitting method and receiving apparatus |
US20020194613A1 (en) | 2001-06-06 | 2002-12-19 | Unger Robert Allan | Reconstitution of program streams split across multiple program identifiers |
US20020194589A1 (en) | 2001-05-08 | 2002-12-19 | Cristofalo Michael | Technique for optimizing the delivery of advertisements and other programming segments by making bandwidth tradeoffs |
US20030012286A1 (en) | 2001-07-10 | 2003-01-16 | Motorola, Inc. | Method and device for suspecting errors and recovering macroblock data in video coding |
US20030021412A1 (en) | 2001-06-06 | 2003-01-30 | Candelore Brant L. | Partial encryption and PID mapping |
US20030028879A1 (en) | 1999-10-27 | 2003-02-06 | Gordon Donald F. | Picture-in-picture and multiple video streams using slice-based encoding |
US20030026523A1 (en) | 2001-07-31 | 2003-02-06 | Soo Jin Chua | High carrier injection optical waveguide switch |
US20030035540A1 (en) | 2001-08-17 | 2003-02-20 | Martin Freeman | System and method for hybrid conditional access for receivers of encrypted transmissions |
US20030035543A1 (en) | 2001-08-15 | 2003-02-20 | Gillon William M. | System and method for conditional access key encryption |
US20030034997A1 (en) | 1995-02-23 | 2003-02-20 | Mckain James A. | Combined editing system and digital moving picture recording system |
US20030035482A1 (en) | 2001-08-20 | 2003-02-20 | Klompenhouwer Michiel Adriaanszoon | Image size extension |
US6526144B2 (en) | 1997-06-02 | 2003-02-25 | Texas Instruments Incorporated | Data protection system |
US20030046687A1 (en) | 2001-09-06 | 2003-03-06 | Octiv, Inc. | Techniques for manipulating programming breaks in streaming content |
US20030059047A1 (en) | 2001-09-27 | 2003-03-27 | Ryuichi Iwamura | PC card recorder |
US6550008B1 (en) | 1999-02-26 | 2003-04-15 | Intel Corporation | Protection of information transmitted over communications channels |
US20030108199A1 (en) | 2001-12-11 | 2003-06-12 | Pinder Howard G. | Encrypting received content |
US20030123664A1 (en) | 2002-01-02 | 2003-07-03 | Pedlow Leo M. | Encryption and content control in a digital broadcast system |
US6590979B1 (en) | 1997-05-29 | 2003-07-08 | Macrovision Corporation | Method and apparatus for compression compatible video scrambling |
US20030133570A1 (en) | 2002-01-02 | 2003-07-17 | Candelore Brant L. | Star pattern partial encryption |
US20030152224A1 (en) | 2002-01-02 | 2003-08-14 | Candelore Brant L. | Video scene change detection |
US20030159139A1 (en) | 2002-01-02 | 2003-08-21 | Candelore Brant L. | Video slice and active region based dual partial encryption |
US20030156718A1 (en) | 2002-01-02 | 2003-08-21 | Candelore Brant L. | Progressive video refresh slice detection |
US20030159140A1 (en) | 2002-01-02 | 2003-08-21 | Candelore Brant L. | Selective encryption to enable multiple decryption keys |
US6621866B1 (en) | 2000-01-28 | 2003-09-16 | Thomson Licensing S.A. | Method for inserting a visual element into an MPEG bit stream |
US6621979B1 (en) | 1998-06-11 | 2003-09-16 | Koninklijke Philips Electronics N.V. | Trick play signal generation for a digital video recorder using retrieved intra-encoded pictures and generated inter-encoded pictures |
US20030174837A1 (en) | 2002-01-02 | 2003-09-18 | Candelore Brant L. | Content replacement by PID mapping |
US20030174844A1 (en) | 1999-03-30 | 2003-09-18 | Candelore Brant L. | Method and apparatus for protecting the transfer of data |
US20030188164A1 (en) | 2002-03-27 | 2003-10-02 | General Instrument Corporation | Smart card mating protocol |
US20030190054A1 (en) | 2000-10-03 | 2003-10-09 | Lidror Troyansky | Method and system for distributing digital content with embedded message |
US6640305B2 (en) | 1999-09-02 | 2003-10-28 | Cryptography Research, Inc. | Digital content protection method and apparatus |
US6643298B1 (en) | 1999-11-23 | 2003-11-04 | International Business Machines Corporation | Method and apparatus for MPEG-2 program ID re-mapping for multiplexing several programs into a single transport stream |
US20030222994A1 (en) | 2002-05-28 | 2003-12-04 | Sony Electronics Inc. | Method and apparatus for synchronizing dynamic graphics |
US20040021764A1 (en) | 2002-01-28 | 2004-02-05 | Be Here Corporation | Visual teleconferencing apparatus |
US6697489B1 (en) | 1999-03-30 | 2004-02-24 | Sony Corporation | Method and apparatus for securing control words |
US20040037421A1 (en) | 2001-12-17 | 2004-02-26 | Truman Michael Mead | Parital encryption of assembled bitstreams |
US6701258B2 (en) | 2002-05-13 | 2004-03-02 | Entek Ird International Corporation | Modular monitoring and protection system with distributed voting logic |
US6704733B2 (en) | 2000-10-25 | 2004-03-09 | Lightning Source, Inc. | Distributing electronic books over a computer network |
US20040049690A1 (en) | 2002-09-09 | 2004-03-11 | Candelore Brant L. | Selective encryption to enable trick play |
US20040049688A1 (en) | 2001-06-06 | 2004-03-11 | Candelore Brant L. | Upgrading of encryption |
US6707696B1 (en) | 2003-05-15 | 2004-03-16 | Broadcom Corporation | Hacker-proof one time programmable memory |
US6714650B1 (en) | 1998-02-13 | 2004-03-30 | Canal + Societe Anonyme | Recording of scrambled digital data |
US20040064688A1 (en) | 2000-07-14 | 2004-04-01 | Andre Jacobs | Secure packet-based data broadcasting architecture |
US20040068659A1 (en) | 2000-08-04 | 2004-04-08 | Eric Diehl | Method for secure distribution of digital data representing a multimedia content |
US20040073917A1 (en) | 2002-01-02 | 2004-04-15 | Sony Corporation | System and method for partially encrypted multimedia stream |
US20040083117A1 (en) | 2001-08-01 | 2004-04-29 | Il-Soo Kim | Method for fast searching and analyzing inter-relations between patents from a patent database |
US20040088552A1 (en) | 2002-11-05 | 2004-05-06 | Candelore Brant L. | Multi-process descrambler |
US6741795B1 (en) | 1998-10-22 | 2004-05-25 | Kabushiki Kaisha Toshiba | Digital video disc player and apparatus for displaying images |
US20040100510A1 (en) | 2002-11-27 | 2004-05-27 | Natasa Milic-Frayling | User interface for a resource search tool |
US20040136532A1 (en) * | 1995-04-03 | 2004-07-15 | Pinder Howard G. | Partial dual-encrypted stream utilizing program map tables |
US20040158721A1 (en) | 1999-03-30 | 2004-08-12 | Candelore Brant L. | System, method and apparatus for secure digital content transmission |
US20040168121A1 (en) | 2002-06-20 | 2004-08-26 | Bellsouth Intellectual Property Corporation | System and method for providing substitute content in place of blocked content |
US20040165586A1 (en) | 2003-02-24 | 2004-08-26 | Read Christopher Jensen | PID filters based network routing |
US20040172650A1 (en) | 2003-02-28 | 2004-09-02 | Hawkins William J. | Targeted content delivery system in an interactive television network |
US6788882B1 (en) | 1998-04-17 | 2004-09-07 | Timesurf, L.L.C. | Systems and methods for storing a plurality of video streams on re-writable random-access media and time-and channel- based retrieval thereof |
US20040181666A1 (en) | 2001-06-06 | 2004-09-16 | Candelore Brant L. | IP delivery of secure digital content |
US20040187161A1 (en) | 2003-03-20 | 2004-09-23 | Cao Adrean T. | Auxiliary program association table |
US20040240668A1 (en) | 2003-03-25 | 2004-12-02 | James Bonan | Content scrambling with minimal impact on legacy devices |
US20040247122A1 (en) | 2003-04-24 | 2004-12-09 | General Instrument Corporation | Processing multiple encrypted transport streams |
US20040261099A1 (en) | 2000-06-21 | 2004-12-23 | Durden George A. | Method for formulating, delivering and managing data concerning programming content and portions thereof |
US20040267602A1 (en) | 2003-06-30 | 2004-12-30 | Gaydos Robert C. | Method, apparatus, and system for asymmetrically handling content requests and content delivery |
US20040264924A1 (en) | 2003-06-26 | 2004-12-30 | International Business Machines Corporation | MPEG-2 decoder, method and buffer scheme for providing enhanced trick mode playback of a video stream |
US20050015816A1 (en) | 2002-10-29 | 2005-01-20 | Actv, Inc | System and method of providing triggered event commands via digital program insertion splicing |
US20050028193A1 (en) | 2002-01-02 | 2005-02-03 | Candelore Brant L. | Macro-block based content replacement by PID mapping |
US6853728B1 (en) | 2000-07-21 | 2005-02-08 | The Directv Group, Inc. | Video on demand pay per view services with unmodified conditional access functionality |
US20050036067A1 (en) | 2003-08-05 | 2005-02-17 | Ryal Kim Annon | Variable perspective view of video images |
US20050066357A1 (en) | 2003-09-22 | 2005-03-24 | Ryal Kim Annon | Modifying content rating |
US20050063541A1 (en) | 2002-11-05 | 2005-03-24 | Candelore Brant L. | Digital rights management of a digital device |
US6883050B1 (en) | 2001-08-09 | 2005-04-19 | General Instrument Corporation | Optimized POD module/host interface |
US20050097596A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Re-encrypted delivery of video-on-demand content |
US20050097598A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Batch mode session-based encryption of video on demand content |
US20050094808A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Dynamic composition of pre-encrypted video on demand content |
US20050097614A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Bi-directional indices for trick mode video-on-demand |
US20050097597A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Hybrid storage of video on demand content |
US20050094809A1 (en) | 2003-11-03 | 2005-05-05 | Pedlow Leo M.Jr. | Preparation of content for multiple conditional access methods in video on demand |
US20050102702A1 (en) | 2003-11-12 | 2005-05-12 | Candelore Brant L. | Cablecard with content manipulation |
US6895128B2 (en) | 2001-05-29 | 2005-05-17 | Mevis Breastcare Gmbh & Co. Kg | Method and computer system for prefetching of images |
US20050129233A1 (en) | 2003-12-16 | 2005-06-16 | Pedlow Leo M.Jr. | Composite session-based encryption of Video On Demand content |
US20050141713A1 (en) | 2002-03-21 | 2005-06-30 | Scm Microsystems Gmbh | Selective multimedia data encryption |
US6917684B1 (en) | 1999-08-31 | 2005-07-12 | Matsushita Electric Industrial Co., Ltd. | Method of encryption and decryption with block number dependant key sets, each set having a different number of keys |
US20050169473A1 (en) | 2004-02-03 | 2005-08-04 | Candelore Brant L. | Multiple selective encryption with DRM |
US6938162B1 (en) | 1999-04-28 | 2005-08-30 | Matsushita Electric Industrial Co., Ltd. | Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system |
US20050192904A1 (en) | 2002-09-09 | 2005-09-01 | Candelore Brant L. | Selective encryption with coverage encryption |
US20050198586A1 (en) | 1998-05-28 | 2005-09-08 | Matsushita Electric Industrial Co., Ltd. | Display control device and method |
US20050259813A1 (en) | 1995-04-03 | 2005-11-24 | Wasilewski Anthony J | Method for partially encrypting program data |
US6976166B2 (en) * | 2001-02-06 | 2005-12-13 | Hewlett-Packard Development Company, L.P. | Method and apparatus for partial encryption of content |
US20050283797A1 (en) | 2001-04-03 | 2005-12-22 | Prime Research Alliance E, Inc. | Subscriber selected advertisement display and scheduling |
US6988238B1 (en) | 2000-01-24 | 2006-01-17 | Ati Technologies, Inc. | Method and system for handling errors and a system for receiving packet stream data |
US7023924B1 (en) | 2000-12-28 | 2006-04-04 | Emc Corporation | Method of pausing an MPEG coded video stream |
US7039802B1 (en) | 1997-06-06 | 2006-05-02 | Thomson Licensing | Conditional access system for set-top boxes |
US7039938B2 (en) | 2002-01-02 | 2006-05-02 | Sony Corporation | Selective encryption for video on demand |
US7055166B1 (en) | 1996-10-03 | 2006-05-30 | Gotuit Media Corp. | Apparatus and methods for broadcast monitoring |
US20060130121A1 (en) | 2004-12-15 | 2006-06-15 | Sony Electronics Inc. | System and method for the creation, synchronization and delivery of alternate content |
US20060130119A1 (en) | 2004-12-15 | 2006-06-15 | Candelore Brant L | Advanced parental control for digital content |
US7065213B2 (en) | 2001-06-29 | 2006-06-20 | Scientific-Atlanta, Inc. | In a subscriber network receiving digital packets and transmitting digital packets below a predetermined maximum bit rate |
US20060136976A1 (en) | 2000-11-29 | 2006-06-22 | International Business Machines Corporation | Re-mapping and interleaving transport packets of multiple transport streams for processing by a single transport demultiplexor |
US7079752B1 (en) | 1999-11-22 | 2006-07-18 | Thomson Licensing | Process for recording a scrambled MPEG stream |
US20060168616A1 (en) | 2002-12-13 | 2006-07-27 | Sony Electronics Inc. | Targeted advertisement selection from a digital stream |
US20060174264A1 (en) | 2002-12-13 | 2006-08-03 | Sony Electronics Inc. | Content personalization for digital conent |
US7089579B1 (en) | 1998-12-20 | 2006-08-08 | Tvworks, Llc | System for transporting MPEG video as streaming video in an HTML web page |
US7096481B1 (en) | 2000-01-04 | 2006-08-22 | Emc Corporation | Preparation of metadata for splicing of encoded MPEG video and audio |
US7096487B1 (en) | 1999-10-27 | 2006-08-22 | Sedna Patent Services, Llc | Apparatus and method for combining realtime and non-realtime encoded content |
US7110659B2 (en) | 2000-06-30 | 2006-09-19 | Kabushiki Kaisha Toshiba | Apparatus and a method for recording and reproducing a broadcast program |
US7146007B1 (en) | 2000-03-29 | 2006-12-05 | Sony Corporation | Secure conditional access port interface |
US7155012B2 (en) | 2002-01-02 | 2006-12-26 | Sony Corporation | Slice mask and moat pattern partial encryption |
US7158185B2 (en) | 2001-05-01 | 2007-01-02 | Scientific-Atlanta, Inc. | Method and apparatus for tagging media presentations with subscriber identification information |
US20070006253A1 (en) * | 2005-06-29 | 2007-01-04 | Pinder Howard G | Partial pre-encryption with network-based packet sorting |
US7194758B1 (en) | 1999-05-24 | 2007-03-20 | Matsushita Electric Industrial Co., Ltd. | Digital broadcast system and its component devices that provide services in accordance with a broadcast watched by viewers |
US20070091886A1 (en) | 2005-08-02 | 2007-04-26 | Elliptic Semiconductor Inc. | Method for inserting/removal padding from packets |
US7221706B2 (en) | 2001-03-05 | 2007-05-22 | Intervideo, Inc. | Systems and methods for performing bit rate allocation for a video data stream |
US7224798B2 (en) * | 1995-04-03 | 2007-05-29 | Scientific-Atlanta, Inc. | Methods and apparatus for providing a partial dual-encrypted stream in a conditional access overlay system |
US7298959B1 (en) | 1999-12-16 | 2007-11-20 | Sharp Laboratories Of America, Inc. | Method and apparatus for storing MPEG-2 transport streams using a conventional digital video recorder |
US7336785B1 (en) | 1999-07-09 | 2008-02-26 | Koninklijke Philips Electronics N.V. | System and method for copy protecting transmitted information |
US7391866B2 (en) | 2000-12-15 | 2008-06-24 | Matsushita Electric Industrial Co., Ltd. | Broadcast apparatus and reception apparatus for providing a storage service by which scrambled content is stored and descrambled using scrambling key list |
US7490236B2 (en) * | 2004-01-14 | 2009-02-10 | Cisco Technology, Inc. | Conditional access overlay partial encryption using MPEG transport continuity counter |
US7508454B1 (en) | 2000-11-16 | 2009-03-24 | Smardtv Sa | Digital television conditional access methods and apparatus for simultaneously handling multiple television programs |
US7555123B2 (en) * | 2005-04-29 | 2009-06-30 | Scientific-Atlanta, Inc. | Processing an MPEG elementary stream in a conditional access overlay environment |
Family Cites Families (187)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2003A (en) * | 1841-03-12 | Improvement in horizontal windivhlls | ||
US5870474A (en) * | 1995-12-04 | 1999-02-09 | Scientific-Atlanta, Inc. | Method and apparatus for providing conditional access in connection-oriented, interactive networks with a multiplicity of service providers |
US3852519A (en) | 1972-10-20 | 1974-12-03 | Optical Systems Corp | Video and audio encoding/decoding system employing suppressed carrier modulation |
DE2944872C2 (en) | 1979-11-07 | 1981-11-19 | Gebrüder Junghans GmbH, 7230 Schramberg | Arrangement for controlling a stepper motor for battery-operated devices |
GB2073534B (en) | 1980-04-02 | 1984-04-04 | Sony Corp | Error concealment in digital television signals |
GB2084432A (en) | 1980-09-18 | 1982-04-07 | Sony Corp | Error concealment in digital television signals |
US4521853A (en) | 1982-06-30 | 1985-06-04 | Texas Instruments Incorporated | Secure microprocessor/microcomputer with secured memory |
US4785361A (en) | 1982-11-08 | 1988-11-15 | Vault Corporation | Method and apparatus for frustrating the unauthorized copying of recorded data |
US4634808A (en) | 1984-03-15 | 1987-01-06 | M/A-Com Government Systems, Inc. | Descrambler subscriber key production system utilizing key seeds stored in descrambler |
US4712238A (en) | 1984-06-08 | 1987-12-08 | M/A-Com Government Systems, Inc. | Selective-subscription descrambling |
JPS6120442A (en) | 1984-07-09 | 1986-01-29 | Toshiba Corp | Chargeable broadcasting system |
JPH0746864B2 (en) | 1984-08-22 | 1995-05-17 | ソニー株式会社 | High efficiency encoder |
US4887296A (en) | 1984-10-26 | 1989-12-12 | Ricoh Co., Ltd. | Cryptographic system for direct broadcast satellite system |
DE3582314D1 (en) | 1984-12-19 | 1991-05-02 | Sony Corp | HIGH-PERFORMANCE TECHNOLOGY FOR ENCODING A DIGITAL VIDEO SIGNAL. |
JPH0793724B2 (en) | 1984-12-21 | 1995-10-09 | ソニー株式会社 | High efficiency coding apparatus and coding method for television signal |
EP0200310B1 (en) | 1985-05-01 | 1993-08-11 | General Instrument Corporation | Direct broadcast satellite signal transmission system |
JPS61264371A (en) | 1985-05-20 | 1986-11-22 | 森 亮一 | Data protection system |
JP2670259B2 (en) | 1985-11-29 | 1997-10-29 | ソニー株式会社 | High efficiency coding device |
JPH0746862B2 (en) | 1985-11-30 | 1995-05-17 | ソニー株式会社 | Frame dropping compression encoding and decoding method |
JP2612557B2 (en) | 1985-12-18 | 1997-05-21 | ソニー株式会社 | Data transmission receiving system and data decoding device |
JPS62231569A (en) | 1986-03-31 | 1987-10-12 | Fuji Photo Film Co Ltd | Quantizing method for estimated error |
US4944006A (en) | 1987-03-12 | 1990-07-24 | Zenith Electronics Corporation | Secure data packet transmission system and method |
JP2508439B2 (en) | 1987-05-29 | 1996-06-19 | ソニー株式会社 | High efficiency encoder |
DE3869475D1 (en) | 1987-06-02 | 1992-04-30 | Siemens Ag | METHOD FOR DETERMINING MOTION VECTOR FIELDS FROM DIGITAL IMAGE SEQUENCES. |
US5122873A (en) | 1987-10-05 | 1992-06-16 | Intel Corporation | Method and apparatus for selectively encoding and decoding a digital motion video signal at multiple resolution levels |
JP2629238B2 (en) | 1988-02-05 | 1997-07-09 | ソニー株式会社 | Decoding device and decoding method |
US4995080A (en) | 1988-08-04 | 1991-02-19 | Zenith Electronics Corporation | Television signal scrambling system and method |
US5247575A (en) | 1988-08-16 | 1993-09-21 | Sprague Peter J | Information distribution system |
US4953023A (en) | 1988-09-29 | 1990-08-28 | Sony Corporation | Coding apparatus for encoding and compressing video data |
JP2900385B2 (en) | 1988-12-16 | 1999-06-02 | ソニー株式会社 | Framing circuit and method |
US5144662A (en) | 1989-02-08 | 1992-09-01 | U.S. Philips Corporation | Public communication system comprising distributed stations, and station and sub-station for use in such a communication system |
JP3018366B2 (en) | 1989-02-08 | 2000-03-13 | ソニー株式会社 | Video signal processing circuit |
US4989245A (en) | 1989-03-06 | 1991-01-29 | General Instrument Corporation | Controlled authorization of descrambling of scrambled programs broadcast between different jurisdictions |
US5208816A (en) | 1989-08-18 | 1993-05-04 | At&T Bell Laboratories | Generalized viterbi decoding algorithms |
US6519693B1 (en) * | 1989-08-23 | 2003-02-11 | Delta Beta, Pty, Ltd. | Method and system of program transmission optimization using a redundant transmission sequence |
JPH03141752A (en) | 1989-10-27 | 1991-06-17 | Hitachi Ltd | Picture signal transmitting method |
JPH03214834A (en) | 1990-01-19 | 1991-09-20 | Canon Inc | Multi-medium network system |
US5237610A (en) | 1990-02-01 | 1993-08-17 | Scientific-Atlanta, Inc. | Independent external security module for a digitally upgradeable television signal decoder |
JPH0474063A (en) | 1990-07-13 | 1992-03-09 | Matsushita Electric Ind Co Ltd | Coding method for picture |
JP2650472B2 (en) | 1990-07-30 | 1997-09-03 | 松下電器産業株式会社 | Digital signal recording apparatus and digital signal recording method |
US5018197A (en) | 1990-07-30 | 1991-05-21 | Zenith Electronics Corporation | Secure video decoder system |
JP2969867B2 (en) | 1990-08-31 | 1999-11-02 | ソニー株式会社 | High-efficiency encoder for digital image signals. |
GB9019538D0 (en) | 1990-09-07 | 1990-10-24 | Philips Electronic Associated | Tracking a moving object |
US5416651A (en) | 1990-10-31 | 1995-05-16 | Sony Corporation | Apparatus for magnetically recording digital data |
US5144664A (en) | 1990-11-16 | 1992-09-01 | General Instrument Corporation | Apparatus and method for upgrading terminals to maintain a secure communication network |
JP2906671B2 (en) | 1990-12-28 | 1999-06-21 | ソニー株式会社 | Highly efficient digital video signal encoding apparatus and method |
DE69226095T2 (en) | 1991-01-17 | 1999-03-11 | Sharp Kk | Image coding and decoding system using an orthogonal transformation and bit allocation method |
US5091936A (en) | 1991-01-30 | 1992-02-25 | General Instrument Corporation | System for communicating television signals or a plurality of digital audio signals in a standard television line allocation |
US5138659A (en) | 1991-05-02 | 1992-08-11 | General Instrument Corporation | Conversion of television signal formats with retention of common control data stream |
JPH04358486A (en) | 1991-06-04 | 1992-12-11 | Toshiba Corp | High efficiency code signal processing unit |
JP2766919B2 (en) | 1991-06-07 | 1998-06-18 | 三菱電機株式会社 | Digital signal recording / reproducing device, digital signal recording device, digital signal reproducing device |
US5263026A (en) | 1991-06-27 | 1993-11-16 | Hughes Aircraft Company | Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver |
MY108367A (en) | 1991-09-30 | 1996-09-30 | Thomson Consumer Electronics S A | Method and apparatus for secure transmisson of video signals. |
DE69217150T2 (en) | 1991-09-30 | 1997-07-17 | Philips Electronics Nv | Motion vector estimation, motion picture coding and storage |
JPH05103309A (en) | 1991-10-04 | 1993-04-23 | Canon Inc | Method and device for transmitting information |
US5398078A (en) | 1991-10-31 | 1995-03-14 | Kabushiki Kaisha Toshiba | Method of detecting a motion vector in an image coding apparatus |
US5724091A (en) * | 1991-11-25 | 1998-03-03 | Actv, Inc. | Compressed digital data interactive program system |
JP3278881B2 (en) | 1991-12-13 | 2002-04-30 | ソニー株式会社 | Image signal generator |
JPH07503111A (en) | 1992-01-08 | 1995-03-30 | マルティチャンネル コミュニケーション サイエンシズ インコーポレーテッド | Device and method for scrambling and descrambling multichannel television signals |
US6208805B1 (en) | 1992-02-07 | 2001-03-27 | Max Abecassis | Inhibiting a control function from interfering with a playing of a video |
JP3259323B2 (en) | 1992-04-13 | 2002-02-25 | ソニー株式会社 | De-interleave circuit |
US5359694A (en) | 1992-07-27 | 1994-10-25 | Teknekron Communications Systems, Inc. | Method and apparatus for converting image data |
US5438369A (en) | 1992-08-17 | 1995-08-01 | Zenith Electronics Corporation | Digital data interleaving system with improved error correctability for vertically correlated interference |
US5481554A (en) | 1992-09-02 | 1996-01-02 | Sony Corporation | Data transmission apparatus for transmitting code data |
US5400401A (en) | 1992-10-30 | 1995-03-21 | Scientific Atlanta, Inc. | System and method for transmitting a plurality of digital services |
US5319707A (en) | 1992-11-02 | 1994-06-07 | Scientific Atlanta | System and method for multiplexing a plurality of digital program services for transmission to remote locations |
US5341425A (en) | 1992-12-02 | 1994-08-23 | Scientific Atlanta, Inc. | Methods and apparatus for uniquely encrypting data at a plurality of data transmission sites for transmission to a reception site |
US5726711A (en) | 1993-01-13 | 1998-03-10 | Hitachi America, Ltd. | Intra-coded video frame data processing methods and apparatus |
US5325432A (en) | 1993-02-04 | 1994-06-28 | Motorola, Inc. | Method for updating encryption key information in communication units |
US5416847A (en) | 1993-02-12 | 1995-05-16 | The Walt Disney Company | Multi-band, digital audio noise filter |
US5444491A (en) | 1993-02-26 | 1995-08-22 | Massachusetts Institute Of Technology | Television system with multiple transmission formats |
US5444763A (en) | 1993-06-17 | 1995-08-22 | Research In Motion Limited | Translation and connection device for radio frequency point of sale transaction systems |
KR960015357B1 (en) | 1993-07-16 | 1996-11-09 | 대우전자 주식회사 | Communication system of scrambling and descrambling for radio program signal |
JP2707950B2 (en) | 1993-07-30 | 1998-02-04 | ソニー株式会社 | Digital image information processing device |
US5381481A (en) * | 1993-08-04 | 1995-01-10 | Scientific-Atlanta, Inc. | Method and apparatus for uniquely encrypting a plurality of services at a transmission site |
KR960012931B1 (en) | 1993-08-31 | 1996-09-25 | 대우전자 주식회사 | Channel error concealing method for classified vector quantized video |
JP3590996B2 (en) | 1993-09-30 | 2004-11-17 | ソニー株式会社 | Hierarchical encoding and decoding apparatus for digital image signal |
US5663764A (en) | 1993-09-30 | 1997-09-02 | Sony Corporation | Hierarchical encoding and decoding apparatus for a digital image signal |
US5617333A (en) | 1993-11-29 | 1997-04-01 | Kokusai Electric Co., Ltd. | Method and apparatus for transmission of image data |
US5455862A (en) | 1993-12-02 | 1995-10-03 | Crest Industries, Inc. | Apparatus and method for encrypting communications without exchanging an encryption key |
JP3271108B2 (en) | 1993-12-03 | 2002-04-02 | ソニー株式会社 | Apparatus and method for processing digital image signal |
FR2715256B1 (en) | 1994-01-19 | 1996-02-16 | France Telecom | Procedures for transmitting and receiving conditional access programs managed by the same operator. |
US5491748A (en) | 1994-03-01 | 1996-02-13 | Zenith Electronics Corporation | Enhanced security for a cable system |
FI97928C (en) * | 1994-03-21 | 1997-03-10 | Nokia Technology Gmbh | Method of encrypting a television transmission transmitted in digital form |
US5420866A (en) | 1994-03-29 | 1995-05-30 | Scientific-Atlanta, Inc. | Methods for providing conditional access information to decoders in a packet-based multiplexed communications system |
FR2718594B1 (en) | 1994-04-06 | 1996-04-26 | France Telecom | Method for broadcasting programs with progressive conditional access and separating the flow of information. |
US5459789A (en) | 1994-04-22 | 1995-10-17 | Thomson Consumer Electronics | Packet TV program component detector |
US5666293A (en) | 1994-05-27 | 1997-09-09 | Bell Atlantic Network Services, Inc. | Downloading operating system software through a broadcast channel |
US6185546B1 (en) * | 1995-10-04 | 2001-02-06 | Intel Corporation | Apparatus and method for providing secured communications |
US5473692A (en) | 1994-09-07 | 1995-12-05 | Intel Corporation | Roving software license for a hardware agent |
US5539828A (en) | 1994-05-31 | 1996-07-23 | Intel Corporation | Apparatus and method for providing secured communications |
US5606359A (en) | 1994-06-30 | 1997-02-25 | Hewlett-Packard Company | Video on demand system with multiple data sources configured to provide vcr-like services |
US5535276A (en) | 1994-11-09 | 1996-07-09 | Bell Atlantic Network Services, Inc. | Yaksha, an improved system and method for securing communications using split private key asymmetric cryptography |
US5518934A (en) | 1994-07-21 | 1996-05-21 | Trustees Of Princeton University | Method of fabricating multiwavelength infrared focal plane array detector |
US5574787A (en) | 1994-07-25 | 1996-11-12 | Ryan; John O. | Apparatus and method for comprehensive copy protection for video platforms and unprotected source material |
US5629981A (en) | 1994-07-29 | 1997-05-13 | Texas Instruments Incorporated | Information management and security system |
US5652795A (en) | 1994-11-14 | 1997-07-29 | Hughes Electronics | Method and apparatus for an adapter card providing conditional access in a communication system |
KR0152788B1 (en) * | 1994-11-26 | 1998-10-15 | 이헌조 | Copy protecting method and apparatus of digital image system |
KR100332743B1 (en) * | 1994-11-26 | 2002-11-07 | 엘지전자주식회사 | Device and method for preventing illegal copy or unauthorized watching of digital image |
US5485577A (en) | 1994-12-16 | 1996-01-16 | General Instrument Corporation Of Delaware | Method and apparatus for incremental delivery of access rights |
KR100205701B1 (en) * | 1994-12-27 | 1999-07-01 | 사또오 후미오 | Transmitter receiver communication processing system integrating ther and digital television broadcasting system |
US5590202A (en) | 1995-01-18 | 1996-12-31 | Zenith Electronics Corporation | Countdown system for conditional access module |
US5583863A (en) | 1995-01-31 | 1996-12-10 | Bell Atlantic Network Services, Inc. | Full service network using asynchronous transfer mode multiplexing |
US6937729B2 (en) * | 1995-04-03 | 2005-08-30 | Scientific-Atlanta, Inc. | Representing entitlements to service in a conditional access system |
US5608448A (en) | 1995-04-10 | 1997-03-04 | Lockheed Martin Corporation | Hybrid architecture for video on demand server |
US5583576A (en) | 1995-09-11 | 1996-12-10 | Oktv, Inc. | Rating-dependent parental lock-out for television reception |
US5582470A (en) | 1995-09-12 | 1996-12-10 | Silitek Corporation | Scanner housing |
US5742680A (en) | 1995-11-13 | 1998-04-21 | E Star, Inc. | Set top box for receiving and decryption and descrambling a plurality of satellite television signals |
JP3416007B2 (en) * | 1995-12-06 | 2003-06-16 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Apparatus and method for screening audiovisual material |
US5751280A (en) | 1995-12-11 | 1998-05-12 | Silicon Graphics, Inc. | System and method for media stream synchronization with a base atom index file and an auxiliary atom index file |
JPH09251714A (en) | 1996-03-14 | 1997-09-22 | Matsushita Electric Ind Co Ltd | Software use control system |
US6055314A (en) * | 1996-03-22 | 2000-04-25 | Microsoft Corporation | System and method for secure purchase and delivery of video content programs |
US5751813A (en) | 1996-04-29 | 1998-05-12 | Motorola, Inc. | Use of an encryption server for encrypting messages |
US5894320A (en) * | 1996-05-29 | 1999-04-13 | General Instrument Corporation | Multi-channel television system with viewer-selectable video and audio |
US5844478A (en) | 1996-05-31 | 1998-12-01 | Thomson Consumer Electronics, Inc. | Program specific information formation for digital data processing |
US5894516A (en) * | 1996-07-10 | 1999-04-13 | Ncr Corporation | Broadcast software distribution |
US6061451A (en) * | 1996-09-03 | 2000-05-09 | Digital Vision Laboratories Corporation | Apparatus and method for receiving and decrypting encrypted data and protecting decrypted data from illegal use |
US5926624A (en) | 1996-09-12 | 1999-07-20 | Audible, Inc. | Digital information library and delivery system with logic for generating files targeted to the playback device |
KR100238098B1 (en) * | 1996-09-16 | 2000-01-15 | 윤종용 | Apparatus for synchronously reproducing multi-angle data |
US6023509A (en) * | 1996-09-30 | 2000-02-08 | Intel Corporation | Digital signature purpose encoding |
US6012144A (en) * | 1996-10-08 | 2000-01-04 | Pickett; Thomas E. | Transaction security method and apparatus |
US5828753A (en) * | 1996-10-25 | 1998-10-27 | Intel Corporation | Circuit and method for ensuring interconnect security within a multi-chip integrated circuit package |
JPH10145773A (en) * | 1996-11-14 | 1998-05-29 | Toshiba Corp | Method for ciphering animation data, computer system applying the method and dynamic image data encoding/ decoding device |
US6192131B1 (en) * | 1996-11-15 | 2001-02-20 | Securities Industry Automation Corporation | Enabling business transactions in computer networks |
US6543053B1 (en) * | 1996-11-27 | 2003-04-01 | University Of Hong Kong | Interactive video-on-demand system |
US6021201A (en) * | 1997-01-07 | 2000-02-01 | Intel Corporation | Method and apparatus for integrated ciphering and hashing |
US6049613A (en) * | 1997-03-07 | 2000-04-11 | Jakobsson; Markus | Method and apparatus for encrypting, decrypting, and providing privacy for data values |
JP3965722B2 (en) | 1997-05-28 | 2007-08-29 | ブラザー工業株式会社 | MPEG stream data scrambling apparatus and scrambling method |
US6057872A (en) * | 1997-07-09 | 2000-05-02 | General Instrument Corporation | Digital coupons for pay televisions |
US6011849A (en) * | 1997-08-28 | 2000-01-04 | Syndata Technologies, Inc. | Encryption-based selection system for steganography |
EP0901261B1 (en) * | 1997-09-05 | 2013-01-09 | Hitachi, Ltd. | Transport protocol conversion method and protocol conversion equipment |
US6378130B1 (en) * | 1997-10-20 | 2002-04-23 | Time Warner Entertainment Company | Media server interconnect architecture |
CA2313133A1 (en) * | 1997-12-09 | 1999-06-17 | Ictv, Inc. | Virtual lan printing over interactive cable television system |
US6505032B1 (en) * | 2000-05-26 | 2003-01-07 | Xtremespectrum, Inc. | Carrierless ultra wideband wireless signals for conveying application data |
US6148082A (en) * | 1998-01-14 | 2000-11-14 | Skystream Corporation | Scrambling and descrambling control word control in a remultiplexer for video bearing transport streams |
US6510554B1 (en) * | 1998-04-27 | 2003-01-21 | Diva Systems Corporation | Method for generating information sub-streams for FF/REW applications |
US6189096B1 (en) * | 1998-05-06 | 2001-02-13 | Kyberpass Corporation | User authentification using a virtual private key |
US6148205A (en) | 1998-06-30 | 2000-11-14 | Motorola, Inc. | Method and apparatus for secure registration within an in-home wireless network |
US6529526B1 (en) * | 1998-07-13 | 2003-03-04 | Thomson Licensing S.A. | System for processing programs and program content rating information derived from multiple broadcast sources |
US6351538B1 (en) * | 1998-10-06 | 2002-02-26 | Lsi Logic Corporation | Conditional access and copy protection scheme for MPEG encoded video data |
JP2000125260A (en) | 1998-10-15 | 2000-04-28 | Toshiba Corp | Moving picture transmission server, moving picture transmission system using the server and moving picture transmission control method |
US6505299B1 (en) * | 1999-03-01 | 2003-01-07 | Sharp Laboratories Of America, Inc. | Digital image scrambling for image coding systems |
US6229895B1 (en) * | 1999-03-12 | 2001-05-08 | Diva Systems Corp. | Secure distribution of video on-demand |
US7530877B1 (en) * | 1999-06-03 | 2009-05-12 | Micron Technology, Inc. | Semiconductor processor systems, a system configured to provide a semiconductor workpiece process fluid |
US6549229B1 (en) * | 1999-07-26 | 2003-04-15 | C-Cubed Corporation | Small, portable, self-contained, video teleconferencing system |
US6463445B1 (en) | 1999-08-27 | 2002-10-08 | Sony Electronics Inc. | Multimedia information retrieval system and method including format conversion system and method |
JP2001069480A (en) | 1999-08-30 | 2001-03-16 | Matsushita Electric Ind Co Ltd | Conditional access system |
US6697944B1 (en) * | 1999-10-01 | 2004-02-24 | Microsoft Corporation | Digital content distribution, transmission and protection system and method, and portable device for use therewith |
JP2001117809A (en) | 1999-10-14 | 2001-04-27 | Fujitsu Ltd | Media converting method and storage medium |
IL132859A (en) | 1999-11-10 | 2008-07-08 | Nds Ltd | System for data stream processing |
JP2001242786A (en) | 1999-12-20 | 2001-09-07 | Fuji Photo Film Co Ltd | Device and method for distribution, and recording medium |
US6857132B1 (en) * | 2000-01-14 | 2005-02-15 | Terayon Communication Systems, Inc. | Head end multiplexer to select and transmit video-on-demand and other requested programs and services |
EP1252738A2 (en) | 2000-01-31 | 2002-10-30 | VDG Inc. | Block encryption method and schemes for data confidentiality and integrity protection |
EP1134977A1 (en) * | 2000-03-06 | 2001-09-19 | Irdeto Access B.V. | Method and system for providing copies of scrambled content with unique watermarks, and system for descrambling scrambled content |
CN1193368C (en) | 2000-03-28 | 2005-03-16 | 三星电子株式会社 | Storage recording medium of scrambling audio data and apparatus and method for recording and reproducing thereof |
KR100611965B1 (en) | 2000-03-28 | 2006-08-11 | 삼성전자주식회사 | Recording medium for storing encrypted audio data, apparatus and method of recording the same and appraratus and method of reproducing the same |
US6684250B2 (en) * | 2000-04-03 | 2004-01-27 | Quova, Inc. | Method and apparatus for estimating a geographic location of a networked entity |
JP2001308812A (en) * | 2000-04-24 | 2001-11-02 | Nec Microsystems Ltd | Method for separation processing of transport stream for digital television and its recording medium |
WO2001086650A1 (en) * | 2000-05-10 | 2001-11-15 | Koninklijke Philips Electronics N.V. | Copy protection system |
FI20001512A (en) | 2000-06-26 | 2001-12-27 | Nokia Corp | Controlling unencrypted user traffic |
US7490344B2 (en) | 2000-09-29 | 2009-02-10 | Visible World, Inc. | System and method for seamless switching |
US20020046406A1 (en) * | 2000-10-18 | 2002-04-18 | Majid Chelehmal | On-demand data system |
CN100428751C (en) * | 2000-12-25 | 2008-10-22 | 松下电器产业株式会社 | Apparatus and method for security processing of communication packets |
US7356245B2 (en) * | 2001-06-29 | 2008-04-08 | International Business Machines Corporation | Methods to facilitate efficient transmission and playback of digital information |
US7421411B2 (en) * | 2001-07-06 | 2008-09-02 | Nokia Corporation | Digital rights management in a mobile communications environment |
US7257844B2 (en) | 2001-07-31 | 2007-08-14 | Marvell International Ltd. | System and method for enhanced piracy protection in a wireless personal communication device |
US7369520B2 (en) * | 2001-10-02 | 2008-05-06 | Nokia Corporation | Internet protocol address to packet identifier mapping |
JP2003122710A (en) | 2001-10-10 | 2003-04-25 | Sony Corp | Network system, processing server, information management server and service providing method |
US7206501B2 (en) * | 2001-10-12 | 2007-04-17 | The Directv Group, Inc. | Method and apparatus for identifying MPEG picture coding types |
US20030079133A1 (en) | 2001-10-18 | 2003-04-24 | International Business Machines Corporation | Method and system for digital rights management in content distribution application |
US20030077071A1 (en) * | 2001-10-23 | 2003-04-24 | Shu Lin | Fast forward trick mode and reverse trick mode using an information file |
US20040010717A1 (en) * | 2002-01-29 | 2004-01-15 | Intertainer Asia Pte Ltd. | Apparatus and method for preventing digital media piracy |
US7328345B2 (en) * | 2002-01-29 | 2008-02-05 | Widevine Technologies, Inc. | Method and system for end to end securing of content for video on demand |
JP2004030374A (en) | 2002-06-27 | 2004-01-29 | Fujitsu Ltd | Information processor for transmitting contents in security system corresponding to license policy, program and method |
US7167560B2 (en) * | 2002-08-08 | 2007-01-23 | Matsushita Electric Industrial Co., Ltd. | Partial encryption of stream-formatted media |
WO2004023759A1 (en) | 2002-08-28 | 2004-03-18 | Matsushita Electric Industrial Co., Ltd. | Content duplication management system and networked apparatus |
US7295673B2 (en) * | 2002-10-23 | 2007-11-13 | Divx, Inc. | Method and system for securing compressed digital video |
US7296866B2 (en) * | 2003-09-18 | 2007-11-20 | Sony Corporation | Ejection control device, liquid-ejecting apparatus, ejection control method, recording medium, and program |
US20050071663A1 (en) * | 2003-09-26 | 2005-03-31 | General Instrument Corporation | Separation of copy protection rules for digital rights management |
EP1673939A1 (en) | 2003-10-14 | 2006-06-28 | Matsushita Electric Industrial Co., Ltd. | Mpeg-21 digital content protection system |
US20050172127A1 (en) | 2004-01-31 | 2005-08-04 | Frank Hartung | System and method for transcoding encrypted multimedia messages transmitted between two devices |
US8194655B2 (en) * | 2004-08-05 | 2012-06-05 | Dust Networks, Inc. | Digraph based mesh communication network |
US20050228752A1 (en) | 2004-04-07 | 2005-10-13 | David Konetski | System and method for managing encrypted multimedia content with an information handling system |
DE102004032528C5 (en) * | 2004-07-06 | 2012-04-05 | Khs Gmbh | A method of performing a roll change in a supply unit for feeding a sheet-like sheet to a packaging machine or the like processing machine and supply unit for performing this method |
US20060036554A1 (en) | 2004-08-12 | 2006-02-16 | Microsoft Corporation | Content and license delivery to shared devices |
US8776216B2 (en) | 2005-10-18 | 2014-07-08 | Intertrust Technologies Corporation | Digital rights management engine systems and methods |
US7555464B2 (en) | 2006-03-01 | 2009-06-30 | Sony Corporation | Multiple DRM management |
-
2002
- 2002-10-18 US US10/274,084 patent/US7155012B2/en not_active Expired - Lifetime
- 2002-12-10 CA CA2413955A patent/CA2413955C/en not_active Expired - Lifetime
- 2002-12-10 CA CA2748412A patent/CA2748412C/en not_active Expired - Lifetime
- 2002-12-10 CA CA2748417A patent/CA2748417C/en not_active Expired - Lifetime
- 2002-12-10 CA CA2748539A patent/CA2748539C/en not_active Expired - Lifetime
-
2006
- 2006-09-25 US US11/526,316 patent/US7751563B2/en not_active Expired - Fee Related
-
2010
- 2010-03-16 US US12/661,400 patent/US8103000B2/en not_active Expired - Fee Related
Patent Citations (220)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4374399A (en) | 1981-08-13 | 1983-02-15 | Zenith Radio Corporation | Insertion of non-synchronous data into vertical interval |
US5553141A (en) | 1982-07-12 | 1996-09-03 | Scientific-Atlanta, Inc. | Encryption and decryption (scrambling and unscrambling) of video signals |
US4914515A (en) | 1986-04-18 | 1990-04-03 | U.S. Philips Corporation | Method of transmitting update information for a stationary video picture |
EP0382764B1 (en) | 1987-09-11 | 1997-04-09 | Personalized Media Communications, L.L.C. | Signal processing apparatus and methods |
US4881263A (en) | 1987-09-25 | 1989-11-14 | Digital Equipment Corporation | Apparatus and method for secure transmission of data over an unsecure transmission channel |
US4964126A (en) | 1988-09-30 | 1990-10-16 | Massachusetts Institute Of Technology | Fault tolerant signal processing machine and method |
US5151782A (en) | 1989-05-17 | 1992-09-29 | Reiss Media Enterprises | Control system for satellite delivered pay-per-view television system |
US5594507A (en) | 1990-09-28 | 1997-01-14 | Ictv, Inc. | Compressed digital overlay controller and method for MPEG type video signal |
US5195135A (en) | 1991-08-12 | 1993-03-16 | Palmer Douglas A | Automatic multivariate censorship of audio-video programming by user-selectable obscuration |
US20010013123A1 (en) | 1991-11-25 | 2001-08-09 | Freeman Michael J. | Customized program creation by splicing server based video, audio, or graphical segments |
US5414852A (en) | 1992-10-30 | 1995-05-09 | International Business Machines Corporation | Method for protecting data in a computer system |
US5444782A (en) | 1993-03-09 | 1995-08-22 | Uunet Technologies, Inc. | Computer network encryption/decryption device |
US5319712A (en) * | 1993-08-26 | 1994-06-07 | Motorola, Inc. | Method and apparatus for providing cryptographic protection of a data stream in a communication system |
US5973726A (en) | 1993-09-24 | 1999-10-26 | Canon Kabushiki Kaisha | Panoramic image processing apparatus |
US5726702A (en) | 1994-02-23 | 1998-03-10 | Hitachi, Ltd. | Television signal receiving apparatus incorporating an information retrieving and reproducing apparatus |
US5629866A (en) | 1994-03-18 | 1997-05-13 | U.S. Philips Corporation | Audio-visual presentation system |
US5515107A (en) | 1994-03-30 | 1996-05-07 | Sigma Designs, Incorporated | Method of encoding a stream of motion picture data |
US5920625A (en) * | 1994-04-08 | 1999-07-06 | Irdeto Bv | Method and apparatus for transmitting and receiving encrypted signals |
US5477263A (en) | 1994-05-26 | 1995-12-19 | Bell Atlantic Network Services, Inc. | Method and apparatus for video on demand with fast forward, reverse and channel pause |
US5526427A (en) | 1994-07-22 | 1996-06-11 | A.C. Nielsen Company | Universal broadcast code and multi-level encoded signal monitoring system |
US5539823A (en) * | 1994-07-27 | 1996-07-23 | General Instrument Corporation Of Delaware | Subscription television picture scrambling and descrambling system providing compatibility with different such systems |
EP0696141B1 (en) | 1994-08-01 | 1999-09-22 | NOKIA TECHNOLOGY GmbH | Method for controlling different conditional access systems sending video, audio and data services and a receiver using the method |
US5835668A (en) | 1994-11-14 | 1998-11-10 | Sony Corporation | Transmission, recording and reproduction of digital data and time information in transport packets using a compression ratio |
EP0720374A1 (en) | 1994-12-30 | 1996-07-03 | Daewoo Electronics Co., Ltd | Apparatus for parallel decoding of digital video signals |
US20030034997A1 (en) | 1995-02-23 | 2003-02-20 | Mckain James A. | Combined editing system and digital moving picture recording system |
US5696906A (en) | 1995-03-09 | 1997-12-09 | Continental Cablevision, Inc. | Telecommunicaion user account management system and method |
US20050259813A1 (en) | 1995-04-03 | 2005-11-24 | Wasilewski Anthony J | Method for partially encrypting program data |
US7496198B2 (en) * | 1995-04-03 | 2009-02-24 | Cisco Technology, Inc. | Partial dual encrypted stream utilizing program map tables |
US6424717B1 (en) | 1995-04-03 | 2002-07-23 | Scientific-Atlanta, Inc. | Encryption devices for use in a conditional access system |
US7224798B2 (en) * | 1995-04-03 | 2007-05-29 | Scientific-Atlanta, Inc. | Methods and apparatus for providing a partial dual-encrypted stream in a conditional access overlay system |
US20040136532A1 (en) * | 1995-04-03 | 2004-07-15 | Pinder Howard G. | Partial dual-encrypted stream utilizing program map tables |
US5600378A (en) | 1995-05-22 | 1997-02-04 | Scientific-Atlanta, Inc. | Logical and composite channel mapping in an MPEG network |
US5652615A (en) | 1995-06-30 | 1997-07-29 | Digital Equipment Corporation | Precision broadcast of composite programs including secondary program content such as advertisements |
US5963909A (en) | 1995-12-06 | 1999-10-05 | Solana Technology Development Corporation | Multi-media copy management system |
US6314409B2 (en) | 1996-01-11 | 2001-11-06 | Veridian Information Solutions | System for controlling access and distribution of digital property |
US5761180A (en) | 1996-01-30 | 1998-06-02 | Sony Corporation | Signal processing for selective temporal data recording and reproduction |
US6222924B1 (en) | 1996-01-30 | 2001-04-24 | Oy Nokia Ab | Scrambling of digital media objects in connection with transmission and storage |
US6351813B1 (en) | 1996-02-09 | 2002-02-26 | Digital Privacy, Inc. | Access control/crypto system |
US5754658A (en) * | 1996-04-19 | 1998-05-19 | Intel Corporation | Adaptive encryption to avoid processor oversaturation |
US20020126890A1 (en) | 1996-05-28 | 2002-09-12 | Tatsushi Katayama | Adaptive image combination according to image sensing condition |
US5838873A (en) | 1996-05-31 | 1998-11-17 | Thomson Consumer Electronics, Inc. | Packetized data formats for digital data storage media |
US6061471A (en) | 1996-06-07 | 2000-05-09 | Electronic Data Systems Corporation | Method and system for detecting uniform images in video signal |
US5905732A (en) | 1996-08-27 | 1999-05-18 | Zenith Electronics Corporation | PCR restamper |
US5892900A (en) | 1996-08-30 | 1999-04-06 | Intertrust Technologies Corp. | Systems and methods for secure transaction management and electronic rights protection |
US7055166B1 (en) | 1996-10-03 | 2006-05-30 | Gotuit Media Corp. | Apparatus and methods for broadcast monitoring |
US5917830A (en) | 1996-10-18 | 1999-06-29 | General Instrument Corporation | Splicing compressed packetized digital video streams |
US6314111B1 (en) | 1996-11-21 | 2001-11-06 | Nokia Technology Gmbh | Method for transmission of address data |
US6377589B1 (en) | 1996-11-26 | 2002-04-23 | British Telecommunications Public Limited Company | Communications system |
US6016348A (en) | 1996-11-27 | 2000-01-18 | Thomson Consumer Electronics, Inc. | Decoding system and data format for processing and storing encrypted broadcast, cable or satellite video data |
US5920626A (en) | 1996-12-20 | 1999-07-06 | Scientific-Atlanta, Inc. | Analog/digital system for television services |
US6201927B1 (en) | 1997-02-18 | 2001-03-13 | Mary Lafuze Comer | Trick play reproduction of MPEG encoded signals |
US5943605A (en) | 1997-04-16 | 1999-08-24 | Lucent Technologies Inc. | Arrangement for controlling extraction of data from a broadband digital stream employing a symbol table for translating symbolic program names to program and channel numbers |
US6005940A (en) | 1997-05-16 | 1999-12-21 | Software Security, Inc. | System for securely storing and reading encrypted data on a data medium using a transponder |
US6181364B1 (en) | 1997-05-16 | 2001-01-30 | United Video Properties, Inc. | System for filtering content from videos |
US6590979B1 (en) | 1997-05-29 | 2003-07-08 | Macrovision Corporation | Method and apparatus for compression compatible video scrambling |
US6526144B2 (en) | 1997-06-02 | 2003-02-25 | Texas Instruments Incorporated | Data protection system |
US6226385B1 (en) | 1997-06-02 | 2001-05-01 | Mitsubishi Denki Kabushiki Kaisha | Encryption communication system capable of reducing network managing workload |
US7039802B1 (en) | 1997-06-06 | 2006-05-02 | Thomson Licensing | Conditional access system for set-top boxes |
US6134237A (en) | 1997-09-30 | 2000-10-17 | Motorola, Inc. | Method and apparatus for tracking data packets in a packet data communication system |
US6418169B1 (en) | 1997-10-16 | 2002-07-09 | Thomson Licensing S.A. | System for prioritizing bi-directional broadcast data |
US6480551B1 (en) | 1997-11-18 | 2002-11-12 | Sony Corporation | Signal processing device and method for switching signal processors thereof |
US6057832A (en) | 1997-12-02 | 2000-05-02 | V Soft Ltd. | Method and apparatus for video-on-demand with fast play capability |
US6170075B1 (en) | 1997-12-18 | 2001-01-02 | 3Com Corporation | Data and real-time media communication over a lossy network |
EP0926894A1 (en) | 1997-12-23 | 1999-06-30 | CANAL+ Société Anonyme | Scrambling unit for a digital transmission system |
US6064676A (en) | 1998-01-14 | 2000-05-16 | Skystream Corporation | Remultipelxer cache architecture and memory organization for storing video program bearing transport packets and descriptors |
US6714650B1 (en) | 1998-02-13 | 2004-03-30 | Canal + Societe Anonyme | Recording of scrambled digital data |
US6473459B1 (en) | 1998-03-05 | 2002-10-29 | Kdd Corporation | Scene change detector |
US6327421B1 (en) | 1998-03-10 | 2001-12-04 | International Business Machines Corporation | Multiple speed fast forward/rewind compressed video delivery system |
US6337947B1 (en) | 1998-03-24 | 2002-01-08 | Ati Technologies, Inc. | Method and apparatus for customized editing of video and/or audio signals |
US6788882B1 (en) | 1998-04-17 | 2004-09-07 | Timesurf, L.L.C. | Systems and methods for storing a plurality of video streams on re-writable random-access media and time-and channel- based retrieval thereof |
US6223290B1 (en) | 1998-05-07 | 2001-04-24 | Intel Corporation | Method and apparatus for preventing the fraudulent use of a cellular telephone |
US20050198586A1 (en) | 1998-05-28 | 2005-09-08 | Matsushita Electric Industrial Co., Ltd. | Display control device and method |
US6621979B1 (en) | 1998-06-11 | 2003-09-16 | Koninklijke Philips Electronics N.V. | Trick play signal generation for a digital video recorder using retrieved intra-encoded pictures and generated inter-encoded pictures |
US6490728B1 (en) | 1998-07-16 | 2002-12-03 | Sony Corporation | Channel information transmitting method and receiving apparatus |
US20020003881A1 (en) | 1998-08-20 | 2002-01-10 | Glenn Arthur Reitmeier | Secure information distribution system utilizing information segment scrambling |
US6219358B1 (en) | 1998-09-11 | 2001-04-17 | Scientific-Atlanta, Inc. | Adaptive rate control for insertion of data into arbitrary bit rate data streams |
US6741795B1 (en) | 1998-10-22 | 2004-05-25 | Kabushiki Kaisha Toshiba | Digital video disc player and apparatus for displaying images |
US7089579B1 (en) | 1998-12-20 | 2006-08-08 | Tvworks, Llc | System for transporting MPEG video as streaming video in an HTML web page |
US6452923B1 (en) | 1998-12-31 | 2002-09-17 | At&T Corp | Cable connected wan interconnectivity services for corporate telecommuters |
US20020021805A1 (en) | 1999-01-06 | 2002-02-21 | Schumann Robert Wilhelm | Digital content distribution system and method |
US6453116B1 (en) | 1999-02-18 | 2002-09-17 | Kabushiki Kaisha Toshiba | Recording medium of stream data, and recording method and playback method of the same |
US6550008B1 (en) | 1999-02-26 | 2003-04-15 | Intel Corporation | Protection of information transmitted over communications channels |
US6697489B1 (en) | 1999-03-30 | 2004-02-24 | Sony Corporation | Method and apparatus for securing control words |
US20030174844A1 (en) | 1999-03-30 | 2003-09-18 | Candelore Brant L. | Method and apparatus for protecting the transfer of data |
US20040158721A1 (en) | 1999-03-30 | 2004-08-12 | Candelore Brant L. | System, method and apparatus for secure digital content transmission |
US20040151314A1 (en) | 1999-03-30 | 2004-08-05 | Candelore Brant L. | Method and apparatus for securing control words |
US6323914B1 (en) | 1999-04-20 | 2001-11-27 | Lsi Logic Corporation | Compressed video recording device with integrated effects processing |
US6938162B1 (en) | 1999-04-28 | 2005-08-30 | Matsushita Electric Industrial Co., Ltd. | Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system |
US7194758B1 (en) | 1999-05-24 | 2007-03-20 | Matsushita Electric Industrial Co., Ltd. | Digital broadcast system and its component devices that provide services in accordance with a broadcast watched by viewers |
US7336785B1 (en) | 1999-07-09 | 2008-02-26 | Koninklijke Philips Electronics N.V. | System and method for copy protecting transmitted information |
US20020036717A1 (en) | 1999-08-24 | 2002-03-28 | Fujitsu Limited | Image processing device, method and storage medium thereof |
US6917684B1 (en) | 1999-08-31 | 2005-07-12 | Matsushita Electric Industrial Co., Ltd. | Method of encryption and decryption with block number dependant key sets, each set having a different number of keys |
US6640305B2 (en) | 1999-09-02 | 2003-10-28 | Cryptography Research, Inc. | Digital content protection method and apparatus |
US20010036271A1 (en) | 1999-09-13 | 2001-11-01 | Javed Shoeb M. | System and method for securely distributing digital content for short term use |
US20030028879A1 (en) | 1999-10-27 | 2003-02-06 | Gordon Donald F. | Picture-in-picture and multiple video streams using slice-based encoding |
US7096487B1 (en) | 1999-10-27 | 2006-08-22 | Sedna Patent Services, Llc | Apparatus and method for combining realtime and non-realtime encoded content |
CA2389247A1 (en) | 1999-11-05 | 2001-05-17 | Dentsu Inc. | Television system for accumulation-oriented broadcast information display system, distribution sysem and information distribution method |
US7079752B1 (en) | 1999-11-22 | 2006-07-18 | Thomson Licensing | Process for recording a scrambled MPEG stream |
US6643298B1 (en) | 1999-11-23 | 2003-11-04 | International Business Machines Corporation | Method and apparatus for MPEG-2 program ID re-mapping for multiplexing several programs into a single transport stream |
US7298959B1 (en) | 1999-12-16 | 2007-11-20 | Sharp Laboratories Of America, Inc. | Method and apparatus for storing MPEG-2 transport streams using a conventional digital video recorder |
US7096481B1 (en) | 2000-01-04 | 2006-08-22 | Emc Corporation | Preparation of metadata for splicing of encoded MPEG video and audio |
US6988238B1 (en) | 2000-01-24 | 2006-01-17 | Ati Technologies, Inc. | Method and system for handling errors and a system for receiving packet stream data |
US6621866B1 (en) | 2000-01-28 | 2003-09-16 | Thomson Licensing S.A. | Method for inserting a visual element into an MPEG bit stream |
US20020056093A1 (en) | 2000-02-02 | 2002-05-09 | Kunkel Gerard K. | System and method for transmitting and displaying targeted infromation |
US20020026478A1 (en) | 2000-03-14 | 2002-02-28 | Rodgers Edward B. | Method and apparatus for forming linked multi-user groups of shared software applications |
US20010024471A1 (en) | 2000-03-15 | 2001-09-27 | Philippe Bordes | Process and device for coding video images |
US7146007B1 (en) | 2000-03-29 | 2006-12-05 | Sony Corporation | Secure conditional access port interface |
US20020023013A1 (en) | 2000-04-19 | 2002-02-21 | Hughes David A. | Method and apparatus for presenting content available by digital download and fulfilling digital download purchases |
US20020067436A1 (en) | 2000-05-16 | 2002-06-06 | Akira Shirahama | Information-processing device |
US20040261099A1 (en) | 2000-06-21 | 2004-12-23 | Durden George A. | Method for formulating, delivering and managing data concerning programming content and portions thereof |
US7110659B2 (en) | 2000-06-30 | 2006-09-19 | Kabushiki Kaisha Toshiba | Apparatus and a method for recording and reproducing a broadcast program |
US20040064688A1 (en) | 2000-07-14 | 2004-04-01 | Andre Jacobs | Secure packet-based data broadcasting architecture |
US6853728B1 (en) | 2000-07-21 | 2005-02-08 | The Directv Group, Inc. | Video on demand pay per view services with unmodified conditional access functionality |
US20040068659A1 (en) | 2000-08-04 | 2004-04-08 | Eric Diehl | Method for secure distribution of digital data representing a multimedia content |
US20020065678A1 (en) | 2000-08-25 | 2002-05-30 | Steven Peliotis | iSelect video |
US20020083439A1 (en) | 2000-08-31 | 2002-06-27 | Eldering Charles A. | System for rescheduling and inserting advertisements |
US20030190054A1 (en) | 2000-10-03 | 2003-10-09 | Lidror Troyansky | Method and system for distributing digital content with embedded message |
US20020044558A1 (en) | 2000-10-13 | 2002-04-18 | Astrolink International, Llc | Distributed IP over ATM architecture |
US6704733B2 (en) | 2000-10-25 | 2004-03-09 | Lightning Source, Inc. | Distributing electronic books over a computer network |
US7508454B1 (en) | 2000-11-16 | 2009-03-24 | Smardtv Sa | Digital television conditional access methods and apparatus for simultaneously handling multiple television programs |
US20020100054A1 (en) | 2000-11-27 | 2002-07-25 | Brian Feinberg | Remote monitoring and control method and apparatus for an information distribution system |
US20020066101A1 (en) | 2000-11-27 | 2002-05-30 | Gordon Donald F. | Method and apparatus for delivering and displaying information for a multi-layer user interface |
US20060136976A1 (en) | 2000-11-29 | 2006-06-22 | International Business Machines Corporation | Re-mapping and interleaving transport packets of multiple transport streams for processing by a single transport demultiplexor |
US7391866B2 (en) | 2000-12-15 | 2008-06-24 | Matsushita Electric Industrial Co., Ltd. | Broadcast apparatus and reception apparatus for providing a storage service by which scrambled content is stored and descrambled using scrambling key list |
US20020144116A1 (en) | 2000-12-27 | 2002-10-03 | Giobbi John J. | Digital rights management |
US7023924B1 (en) | 2000-12-28 | 2006-04-04 | Emc Corporation | Method of pausing an MPEG coded video stream |
US20020109707A1 (en) | 2001-01-17 | 2002-08-15 | Guillermo Lao | Method and apparatus for managing digital content usage rights |
US6976166B2 (en) * | 2001-02-06 | 2005-12-13 | Hewlett-Packard Development Company, L.P. | Method and apparatus for partial encryption of content |
US20020116705A1 (en) | 2001-02-20 | 2002-08-22 | Perlman Stephen G. | System and method for processing conditional access data |
US20020164022A1 (en) | 2001-03-02 | 2002-11-07 | Strasser David A. | Method and apparatus for providing bus-encrypted copy protection key to an unsecured bus |
US7221706B2 (en) | 2001-03-05 | 2007-05-22 | Intervideo, Inc. | Systems and methods for performing bit rate allocation for a video data stream |
US20020144260A1 (en) | 2001-03-29 | 2002-10-03 | Koninklijke Philips Electronics N.V. | Method for adaptive data/content insertion in MPEG2 transport stream |
US20050283797A1 (en) | 2001-04-03 | 2005-12-22 | Prime Research Alliance E, Inc. | Subscriber selected advertisement display and scheduling |
US20020150239A1 (en) * | 2001-04-17 | 2002-10-17 | Vidius Inc. | Method for personalized encryption in an un-trusted environment |
US20020157115A1 (en) | 2001-04-24 | 2002-10-24 | Koninklijke Philips Electronics N.V. | Wireless communication point of deployment module for use in digital cable compliant devices |
US7158185B2 (en) | 2001-05-01 | 2007-01-02 | Scientific-Atlanta, Inc. | Method and apparatus for tagging media presentations with subscriber identification information |
US20020194589A1 (en) | 2001-05-08 | 2002-12-19 | Cristofalo Michael | Technique for optimizing the delivery of advertisements and other programming segments by making bandwidth tradeoffs |
US6895128B2 (en) | 2001-05-29 | 2005-05-17 | Mevis Breastcare Gmbh & Co. Kg | Method and computer system for prefetching of images |
US20020194613A1 (en) | 2001-06-06 | 2002-12-19 | Unger Robert Allan | Reconstitution of program streams split across multiple program identifiers |
US20060269060A1 (en) | 2001-06-06 | 2006-11-30 | Candelore Brant L | Partial encryption and PID mapping |
US20030026423A1 (en) | 2001-06-06 | 2003-02-06 | Unger Robert Allan | Critical packet partial encryption |
US7124303B2 (en) | 2001-06-06 | 2006-10-17 | Sony Corporation | Elementary stream partial encryption |
US20030021412A1 (en) | 2001-06-06 | 2003-01-30 | Candelore Brant L. | Partial encryption and PID mapping |
US20060262926A1 (en) | 2001-06-06 | 2006-11-23 | Candelore Brant L | Time division partial encryption |
US7151831B2 (en) | 2001-06-06 | 2006-12-19 | Sony Corporation | Partial encryption and PID mapping |
US20040181666A1 (en) | 2001-06-06 | 2004-09-16 | Candelore Brant L. | IP delivery of secure digital content |
US20060153379A1 (en) | 2001-06-06 | 2006-07-13 | Candelore Brant L | Partial encryption and PID mapping |
US7139398B2 (en) | 2001-06-06 | 2006-11-21 | Sony Corporation | Time division partial encryption |
US20060115083A1 (en) | 2001-06-06 | 2006-06-01 | Candelore Brant L | Partial encryption and PID mapping |
US7127619B2 (en) | 2001-06-06 | 2006-10-24 | Sony Corporation | Decoding and decryption of partially encrypted information |
US20040049688A1 (en) | 2001-06-06 | 2004-03-11 | Candelore Brant L. | Upgrading of encryption |
US7065213B2 (en) | 2001-06-29 | 2006-06-20 | Scientific-Atlanta, Inc. | In a subscriber network receiving digital packets and transmitting digital packets below a predetermined maximum bit rate |
US20030012286A1 (en) | 2001-07-10 | 2003-01-16 | Motorola, Inc. | Method and device for suspecting errors and recovering macroblock data in video coding |
US20030026523A1 (en) | 2001-07-31 | 2003-02-06 | Soo Jin Chua | High carrier injection optical waveguide switch |
US20040083117A1 (en) | 2001-08-01 | 2004-04-29 | Il-Soo Kim | Method for fast searching and analyzing inter-relations between patents from a patent database |
US6883050B1 (en) | 2001-08-09 | 2005-04-19 | General Instrument Corporation | Optimized POD module/host interface |
US20030035543A1 (en) | 2001-08-15 | 2003-02-20 | Gillon William M. | System and method for conditional access key encryption |
US20030035540A1 (en) | 2001-08-17 | 2003-02-20 | Martin Freeman | System and method for hybrid conditional access for receivers of encrypted transmissions |
US20030035482A1 (en) | 2001-08-20 | 2003-02-20 | Klompenhouwer Michiel Adriaanszoon | Image size extension |
US20030046687A1 (en) | 2001-09-06 | 2003-03-06 | Octiv, Inc. | Techniques for manipulating programming breaks in streaming content |
US6925180B2 (en) | 2001-09-27 | 2005-08-02 | Sony Corporation | PC card recorder |
US20030059047A1 (en) | 2001-09-27 | 2003-03-27 | Ryuichi Iwamura | PC card recorder |
US20030108199A1 (en) | 2001-12-11 | 2003-06-12 | Pinder Howard G. | Encrypting received content |
US20040037421A1 (en) | 2001-12-17 | 2004-02-26 | Truman Michael Mead | Parital encryption of assembled bitstreams |
US20030159139A1 (en) | 2002-01-02 | 2003-08-21 | Candelore Brant L. | Video slice and active region based dual partial encryption |
US20030123664A1 (en) | 2002-01-02 | 2003-07-03 | Pedlow Leo M. | Encryption and content control in a digital broadcast system |
US20030133570A1 (en) | 2002-01-02 | 2003-07-17 | Candelore Brant L. | Star pattern partial encryption |
US20030152224A1 (en) | 2002-01-02 | 2003-08-14 | Candelore Brant L. | Video scene change detection |
US20050028193A1 (en) | 2002-01-02 | 2005-02-03 | Candelore Brant L. | Macro-block based content replacement by PID mapping |
US20030156718A1 (en) | 2002-01-02 | 2003-08-21 | Candelore Brant L. | Progressive video refresh slice detection |
US20030159140A1 (en) | 2002-01-02 | 2003-08-21 | Candelore Brant L. | Selective encryption to enable multiple decryption keys |
US7155012B2 (en) | 2002-01-02 | 2006-12-26 | Sony Corporation | Slice mask and moat pattern partial encryption |
US20030174837A1 (en) | 2002-01-02 | 2003-09-18 | Candelore Brant L. | Content replacement by PID mapping |
US20040073917A1 (en) | 2002-01-02 | 2004-04-15 | Sony Corporation | System and method for partially encrypted multimedia stream |
US7039938B2 (en) | 2002-01-02 | 2006-05-02 | Sony Corporation | Selective encryption for video on demand |
US20040021764A1 (en) | 2002-01-28 | 2004-02-05 | Be Here Corporation | Visual teleconferencing apparatus |
US20050141713A1 (en) | 2002-03-21 | 2005-06-30 | Scm Microsystems Gmbh | Selective multimedia data encryption |
US20030188164A1 (en) | 2002-03-27 | 2003-10-02 | General Instrument Corporation | Smart card mating protocol |
US6701258B2 (en) | 2002-05-13 | 2004-03-02 | Entek Ird International Corporation | Modular monitoring and protection system with distributed voting logic |
US20030222994A1 (en) | 2002-05-28 | 2003-12-04 | Sony Electronics Inc. | Method and apparatus for synchronizing dynamic graphics |
US20040168121A1 (en) | 2002-06-20 | 2004-08-26 | Bellsouth Intellectual Property Corporation | System and method for providing substitute content in place of blocked content |
US20040049690A1 (en) | 2002-09-09 | 2004-03-11 | Candelore Brant L. | Selective encryption to enable trick play |
US20040047470A1 (en) | 2002-09-09 | 2004-03-11 | Candelore Brant L. | Multiple partial encryption using retuning |
US7151833B2 (en) | 2002-09-09 | 2006-12-19 | Sony Corporation | Selective encryption to enable trick play |
US20050192904A1 (en) | 2002-09-09 | 2005-09-01 | Candelore Brant L. | Selective encryption with coverage encryption |
US7120250B2 (en) | 2002-09-09 | 2006-10-10 | Sony Corporation | Content distribution for multiple digital rights management |
US20050015816A1 (en) | 2002-10-29 | 2005-01-20 | Actv, Inc | System and method of providing triggered event commands via digital program insertion splicing |
US20040088552A1 (en) | 2002-11-05 | 2004-05-06 | Candelore Brant L. | Multi-process descrambler |
US20040086127A1 (en) | 2002-11-05 | 2004-05-06 | Candelore Brant L. | Mechanism for protecting the transfer of digital content |
US20040088558A1 (en) | 2002-11-05 | 2004-05-06 | Candelore Brant L. | Descrambler |
US20050063541A1 (en) | 2002-11-05 | 2005-03-24 | Candelore Brant L. | Digital rights management of a digital device |
US20040100510A1 (en) | 2002-11-27 | 2004-05-27 | Natasa Milic-Frayling | User interface for a resource search tool |
US20060168616A1 (en) | 2002-12-13 | 2006-07-27 | Sony Electronics Inc. | Targeted advertisement selection from a digital stream |
US20060174264A1 (en) | 2002-12-13 | 2006-08-03 | Sony Electronics Inc. | Content personalization for digital conent |
US20040165586A1 (en) | 2003-02-24 | 2004-08-26 | Read Christopher Jensen | PID filters based network routing |
US20040172650A1 (en) | 2003-02-28 | 2004-09-02 | Hawkins William J. | Targeted content delivery system in an interactive television network |
US20040187161A1 (en) | 2003-03-20 | 2004-09-23 | Cao Adrean T. | Auxiliary program association table |
US20040240668A1 (en) | 2003-03-25 | 2004-12-02 | James Bonan | Content scrambling with minimal impact on legacy devices |
US7292692B2 (en) | 2003-03-25 | 2007-11-06 | Sony Corporation | Content scrambling with minimal impact on legacy devices |
US20040247122A1 (en) | 2003-04-24 | 2004-12-09 | General Instrument Corporation | Processing multiple encrypted transport streams |
US6707696B1 (en) | 2003-05-15 | 2004-03-16 | Broadcom Corporation | Hacker-proof one time programmable memory |
US20040264924A1 (en) | 2003-06-26 | 2004-12-30 | International Business Machines Corporation | MPEG-2 decoder, method and buffer scheme for providing enhanced trick mode playback of a video stream |
US20040267602A1 (en) | 2003-06-30 | 2004-12-30 | Gaydos Robert C. | Method, apparatus, and system for asymmetrically handling content requests and content delivery |
US20050036067A1 (en) | 2003-08-05 | 2005-02-17 | Ryal Kim Annon | Variable perspective view of video images |
US20050066357A1 (en) | 2003-09-22 | 2005-03-24 | Ryal Kim Annon | Modifying content rating |
US20050097597A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Hybrid storage of video on demand content |
US20050094808A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Dynamic composition of pre-encrypted video on demand content |
US20050097614A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Bi-directional indices for trick mode video-on-demand |
US20050097598A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Batch mode session-based encryption of video on demand content |
US20050097596A1 (en) | 2003-10-31 | 2005-05-05 | Pedlow Leo M.Jr. | Re-encrypted delivery of video-on-demand content |
US20050094809A1 (en) | 2003-11-03 | 2005-05-05 | Pedlow Leo M.Jr. | Preparation of content for multiple conditional access methods in video on demand |
US20050102702A1 (en) | 2003-11-12 | 2005-05-12 | Candelore Brant L. | Cablecard with content manipulation |
US20050129233A1 (en) | 2003-12-16 | 2005-06-16 | Pedlow Leo M.Jr. | Composite session-based encryption of Video On Demand content |
US7490236B2 (en) * | 2004-01-14 | 2009-02-10 | Cisco Technology, Inc. | Conditional access overlay partial encryption using MPEG transport continuity counter |
US20050169473A1 (en) | 2004-02-03 | 2005-08-04 | Candelore Brant L. | Multiple selective encryption with DRM |
US20060130121A1 (en) | 2004-12-15 | 2006-06-15 | Sony Electronics Inc. | System and method for the creation, synchronization and delivery of alternate content |
US20060130119A1 (en) | 2004-12-15 | 2006-06-15 | Candelore Brant L | Advanced parental control for digital content |
US7555123B2 (en) * | 2005-04-29 | 2009-06-30 | Scientific-Atlanta, Inc. | Processing an MPEG elementary stream in a conditional access overlay environment |
US20070006253A1 (en) * | 2005-06-29 | 2007-01-04 | Pinder Howard G | Partial pre-encryption with network-based packet sorting |
US20070091886A1 (en) | 2005-08-02 | 2007-04-26 | Elliptic Semiconductor Inc. | Method for inserting/removal padding from packets |
Non-Patent Citations (18)
Title |
---|
"Desktop Encyclopedia of the Internet," Nathan J. Muller, Artech House, 1999. |
"DVB Conditional Access," David Cutts, Electronics and Communication Engineering Journal, Feb. 1997. |
"How Computers Work-Millennium Edition," Ron White, Que Corporation, 1999. |
"How Networks Work" Derfler and Freed, Ziff-Davis Press, 1996. |
"How The Internet Works-Millennium Edition," Preston Gralla, Que Corporation, 1999. |
"K-Time Encryption for K-Time Licensing," Perkins, et al., IEEE, 2002. |
"MPEG-2 Compliant Trick Play Over a Digital Interface," van Gassel et al., IEEE pp. 170-171., 2002. |
"MPEG-2 Transmission," Dr. Gorry Fairhurst, Jan. 2001. |
"Partial Encryption of Compressed Images and Videos," Howard Cheng et al. IEEE 2000. |
"Secure Transmission of MPEG Video Sources," Teixeira et al., date unknown. |
Alattar et al. "Improved Selective Encryption Techniques for Secure Transmission of MPEG Video Bit-Streams" 1999 IEEE, pp. 256-260. * |
All references considered from parent application 10/274,084, filed Oct. 18, 2002. |
Anonymous, Rehabilitation of Digital Television, CEATEC Japan 2003, Special Report, Jan. 2003. (Translation provided by Japanese associate). |
Anonymous-Functional Model of a Condtional Access System; EBU Project Group B/CA, EBU Review Technical, Winter No. 266, Grand-Saconnex, CH; pp. 64-77; 1995. |
Microsoft Windows XP, Oct. 2001, Microsoft, Screen Shots and Help Files. |
MPEG-2 Digital Broadcast Pocket Guide vol. 6, Copyright 201 Acterna, LLC. |
Perry et al, "Final Report of the Co-Chairs of the Broadcast Protection Discussion Subgroup to the Copy Protection Technical Working Group," Jun. 3, 2003. |
Teixeira et al., Secure Transmission of MPEG Video Sources, Nov. 6, 1998 (Resubmitted with date provided by Wayback machine.). |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100189254A1 (en) * | 2002-01-02 | 2010-07-29 | Candelore Brant L | Slice mask and moat pattern partial encryption |
US8103000B2 (en) * | 2002-01-02 | 2012-01-24 | Sony Corporation | Slice mask and moat pattern partial encryption |
US20190342071A1 (en) * | 2018-05-07 | 2019-11-07 | Qualcomm Incorporated | Method and apparatus for decrypting data blocks of a pattern-encrypted subsample |
US10715310B2 (en) * | 2018-05-07 | 2020-07-14 | Qualcomm Incorporated | Method and apparatus for decrypting data blocks of a pattern-encrypted subsample |
Also Published As
Publication number | Publication date |
---|---|
US20070098166A1 (en) | 2007-05-03 |
CA2748417A1 (en) | 2003-07-02 |
US8103000B2 (en) | 2012-01-24 |
CA2413955A1 (en) | 2003-07-02 |
US20030152226A1 (en) | 2003-08-14 |
CA2748412C (en) | 2015-02-03 |
CA2748539C (en) | 2014-12-09 |
US20100189254A1 (en) | 2010-07-29 |
CA2748412A1 (en) | 2003-07-02 |
CA2748417C (en) | 2015-02-10 |
US7155012B2 (en) | 2006-12-26 |
CA2748539A1 (en) | 2003-07-02 |
CA2413955C (en) | 2012-04-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7751563B2 (en) | Slice mask and moat pattern partial encryption | |
US7751564B2 (en) | Star pattern partial encryption method | |
US8452010B2 (en) | Video slice and active region based multiple partial encryption | |
US7292690B2 (en) | Video scene change detection | |
US7292691B2 (en) | Progressive video refresh slice detection | |
US8027470B2 (en) | Video slice and active region based multiple partial encryption | |
CA2413807C (en) | Progressive video refresh slice detection |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552) Year of fee payment: 8 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20220706 |